The past few months have got everyone
talking about the corona virus disease, COVID-19, caused by SARS-COV2 a novel
type of corona virus similar to the ones that caused the SARS and MERS
outbreaks in 2002 and 2012 respectively. With over 88,900 recorded cases and 2,900
deaths worldwide as of today, it has been placed as an international public
health alert and emergency by the WHO. Although most of the cases started in
China, the incidence rate in China has been dropping recently while spread to
other countries like Iran, Italy, France and more recently , the US have been
on the increase. Despite the relatively lower case mortality ratio when
compared to other viral diseases like Ebola and Rabies, COVID-19 is a serious
problem to the world because of the lack of vaccine or antiviral agent and more
importantly, the ease of spread (which is common to many respiratory
illnesses). Certainly, nothing is easier than spread via respiratory droplets
whether it’s by coughing, wheezing and sneezing. There may also be other means
of spread; however, these routes have not been confirmed. In general, not much
is known about this nouvelle virus but more information will be unveiled with
time. When infected by the virus, the person may be asymptomatic or present
with the following unspecific symptoms:
Others may develop aches, pain, nasal
congestion, runny nose, sore throat and diarrhoea which are mild and begin
gradually. Most cases resolve without any intervention but some people run the
risk of developing very severe respiratory disease like pneumonia and
consequently die. The population most vulnerable and with the highest risk of
falling sick include:
- Elderly (those above 65 years)
- Those with co-morbid medical problems
like hypertension and diabetes
- People with
compromised immunity
It is paramount to follow the
following tips to stay safe:
- Regular hand washing with soap and
water or alcohol based hand sanitizers
- Avoid touching eyes, nose and mouth
with hands
- Maintain at least 6-meter distance from
anybody especially people who are sick- coughing and sneezing
- Avoid going to overcrowded areas
- Keep yourself up to date with recent
COVID-19 news
- Follow new health tips and avoid unnecessary
travel especially international travel if possible
Report
to health authority if you notice the above symptoms
The increase in Substandard and falsified medical products is a growing
public health concern that is not always in the public’s mind. It is always assumed
that all health products affect health positively but that is not always true. Just
as there are fake gold necklaces and adulterated fruits, there are also substandard
and fake medical products. Drugs are by far the most common medical products
implicate as well as vaccines and in-vitro diagnostics. Drugs come in either
brand or generic forms; the brand forms are made and sold exclusively by the
producer while the generic forms can be produced and sold by any manufacturer. Unlike
other products that their generic forms are poor, generic drugs actually do
very well when compared with their brand counterparts as they contain the same
active substances and ingredients. However, brand drugs are far more expensive
due to their strict monopoly and exclusivity. It is due to this price
difference that insurance companies continue to advocate for the use of generic
drugs to help improve drug coverage not only in low and middle income countries
but also in developed countries. Furthermore, this price difference also
accounts for the safety of brand drugs and is why the vision of improved drug
coverage have been sabotaged by substandard and fake drugs.
Substandard drugs are drugs that fail to meet quality standard or
specifications due to poor production practices or storage procedures. There
are common thoughts that brand drugs are never substandard and that generic
drugs are all substandard but that is actually not true. Some brand drugs, no
matter how expensive they are sold, can be substandard. The problem with
generic drugs is that the manufacturers (particularly those in China and India)
tend to send their higher quality generics to developed nations like Canada and
the United States while they sell poor quality drugs to developing nations like
Nigeria. The ideal is that generics should be as effective as brand drugs. Sometimes,
substandard dugs are released by mistake and then subsequently taken out or
recalled voluntarily by the pharmaceutical company unlike fake drugs. Fake drugs
are not even drugs in the true sense and its production is a pharmaceutical
crime. They are drugs and pharmaceutical products that are deliberately and
fraudulently falsified products which do not represent their identity, composition
or source and are produced for monetary gains. Whether substandard or fake, these
drugs pose significant limitations to the realisation of the SDG 3 which aims
to achieve universal health coverage, including access to essential medicines
and vaccines. This problem is not only faced by developing, low and middle
income countries because of their poor drug regulation and poor access to care,
but every country and every one is a potential target due to online marketing.
The impacts of accidentally using substandard or fake drugs are glaring.
Some of the resulting problems include treatment difficulties,
non-responsiveness to health care, adverse reactions, dissatisfaction with
drugs and death. In countries where these drugs are very common, many patients
have died of treatable infections due to poor activity of these drugs since
antibiotics are mostly involved. This can be really frustrating for doctors who
sometimes question their diagnosis or drug recommendation and may even increase
doses to over 10 times what is considered normal with no perceived effect. In
addition, the poor activity of these drugs ends up worsening the problem of
antimicrobial resistance since not all organisms are wiped out. More so, some
of these products can contain substances that can harm an individual; there
have many cases of drugs contamination with toxic substances.
The availability and sale of substandard and fake drugs is a life-threatening problem and must be tackled as a priority. This must be taken seriously by all governments and followed with proper legislative actions including clear and hefty punishments on offenders. There should increase in drug surveillance and these bad drugs should not just be seized but traced back to the source and disciplinary action carried out by responsible regulatory agencies. Currently, there are already very efficient means of detecting these drugs such as scanning of codes or product labels but they are mostly in developed countries. Improved and effective communication between clinics, local and national regulatory agencies and pharmaceutical companies would also help increase surveillance. Finally, we must learn to be careful ourselves and know that these medicines are capable of causing severe harm… always remember to:
- Check
if the production and expiry dates of the inside and outside packaging match
- Examine
the packaging for spelling mistakes and errors
- Make
sure the medicine is not disclosed and doesn’t smell unusual
- Report
adverse reaction to your doctor
- Report
suspicious products to regulatory agency
If
you asked a random person the tips to healthy living, you’re probably going to
hear things like being physically active, not smoking, having a balanced diet, going
for regular health checks and so on… of course, these are what we are
constantly fed by the media. Healthy living as it turns out is more complicated
than only these lifestyle modifications. It is easy to understand why we often
talk about lifestyle modifications- it’s proactive, cost-friendly and the human
mind naturally thinks of prevention. Using a sports case example: Why is a
certain sports player so good? Probably because he practices a lot- however, there
are other circumstances surrounding the individual such as having a good coach.
So, just as having a good coach and other important advantages surround such an
individual, there are other factors that surround and consequently influence
healthy living- some of these are even more important than lifestyle
modifications. Health is not just affected by what we do or don’t do; it is
also influenced into our environment. For instance, no matter how many times
you wash your hands, you are still more likely to suffer from COVID19 infection
if you’re living in China because of the prevalence of the infection in that location.
This is not to undermine the benefits of proper hand washing, staying
physically active or practicing safer sex, but it’s high time we brought the
other factors that influence health into limelight and address them:
- Aboriginal status
- Disability
- Early life
- Education
- Employment and working conditions
- Food insecurity
- Health services
- Gender and gender identity
- Housing
- Income and income distribution
- Race
- Sexual orientation
- Social exclusion
- Social safety net
- Unemployment and job security
These
factors are worthy to be addressed because of the health inequalities
associated with them. Health is a universal human right and should not be
treated like luxury or a mere commodity. Research has documented that people
with disabilities are likely to be refused care, blacks have shorter lifespan in
countries like America and even Canada despite universal health coverage. These
differences in health outcome are clearly due to differences in realities of
daily life such as poor employment which leads to low income and poor housing.
Considering
the preceding paragraphs, tackling poverty should definitely be a health
priority! This is however very difficult because health inequality is rooted in
the fundamental problem of different forms of inequality in human life. It is then
left for world leaders and governments to determine what should be a right or
privilege and what should be bought as a commodity. Given the importance of
health, most developed nations are pushing for universal health care. Income is
a better predictor of good health than any lifestyle modification; therefore, it
makes sense that income redistribution policies would be a bold step in the
right direction for any country that has the health of her citizens at heart.
Additionally, education should be made accessible and available to all as it
correlates with better income and also contributes to knowledge about ways of
staying healthy.
Hospitals and health care facilities
are generally seen as one stop solutions to most health problems. However,
these places have the potential to increase or add to our health problems when
we visit them while seeking treatment. There is always a small risk of
something going wrong during health visits or interventions and this; unfortunately,
happens quite a number of times as patients often suffer one complication or
the other when they go to the hospital or healthcare facility. Examples of such complications include:
- Developing a VVF from an obstetric surgery
- Developing a nosocomial infection
- Losing a child due to injection of a wrong drug
- Overdosing
Patient
safety is a serious and common situation- The World health Organization reports
that 4 in 10 patients (40%) are harmed in primary and ambulatory care settings.
This is of course worse in low and middle income countries which have
substandard health care facilities with 134 million adverse events (over 2/3 of
the world burden) occurring annually. A patient in the United States has a 1 in
4 chance of experiencing injury, harm or death when admitted to the hospital, and
this situation is quite similar in Canada as well as many developed countries. This
bothersome statistics begs the question: Are health facilities doing more harm
than good? I mean, should we decline doctors’ appointments and develop cold
feet towards hospitals visits- the very place we need to go to get help? Well,
the answer remains YES. However, we need to recognize the importance of patient
safety and endeavour to make it a top priority. WHO defines Patient safety as
the absence of preventable harm to a patient during the process of health care,
and reduction of unnecessary harm associated with health care to an acceptable
minimum. This harm can come in form of infections, injuries, errors and poor
care.
Hospital
infections, also known as nosocomial infections are caused mostly by antibiotic
resistant bacteria which can affect any part of the body like the skin, lungs
and can lead to sepsis and can quickly progress to organ damage and ultimately,
death. Invasive procedures like surgeries have increased risk of complications
and contaminations due to additional problems with anaesthesia while higher
risk procedures like pancreatic surgeries are even worse. This risk is further
increased by poor training and expertise. Errors in drug prescriptions also account
for many hospital problems which errors cost about 42 billion dollars annually and
can easily result in death especially in children. Poor patient management
cause problems like bed sores and thromboembolism due to prolonged hospital
stay. Patient safety is a serious issue, a matter of life and death actually. Health
providers must endeavour to do no harm consciously and unconsciously because it
violates the ethics of healthcare. Furthermore, lawsuits to health workers for
making a mistake may be cultivating unsafe blame culture which focuses on the
‘WHO’ (who made the mistake), instead of the ‘WHY’ (why the mistake was made in
the first place). Focussing on the person that made the error also prevents
identification of errors within the system itself.
Errors
arise as a result of poor system organisation and usually result from workers being
extremely tired, probably experiencing fatigue or burnout. Since human errors
are inevitable, a good system- which develops only when there is good safety
culture of transparency and no blame games should sufficiently reduce errors. For
example, if a nurse gives propranolol to a patient with heart failure that is
coincidentally asthmatic (this would sadly cause an asthmatic attack), a good
safety culture should seek to find out how the error moved past the entire
system, and not just focus on the nurse. Additionally, effective communication,
which involves active listening, showing empathy and patient involvement in
care, is important and necessary to reduce errors. It would help for patients
to be more involved in their care and clarified if need be as this emphasizes
the importance of individual care as well as the gradual shift from patient to
client. Patients who have questions about their care or feel uncomfortable
about a procedure should be able to:
- Talk to someone immediately- preferably someone involved in their
care
- Discuss the issue in a polite way and let the person know they want
feedback if the issue warrants investigation OR
- Report to the hospital through the customer service, suggestion
box, hotline, patient advocacy or patient and family relations department.
Finally, it is important to have a
national hospital rating system like the leapfrog hospital grade system in the
US for the public to make choices about which hospital to visit depending on
the safety and quality of care; this should also help foster better safety culture
for health facilities.
Everyone
continues to talk about under-nutrition, starvation, malnutrition and lack of food
supplies in developing nations and regions in conflict. However, there is
little or no conversation around the exponential increase in the number of obese
children. This is not much of a surprise as overweight is the other face of the
nutrition problem common in developing nations like Canada and the US
particularly in minority groups. Just to give you an insight into the depth of this
problem; the number of overweight and obese children has quadrupled since the 90s
in Canada and little has been done about it as the situation is even worse in
the US with 1 in 4 children currently overweight. As if this is not enough, many
of these children continue into adulthood remaining overweight and obese
worsening the obesity epidemic. As we know, obesity whether in childhood or
adulthood is not a disease in itself however, it predisposes a child to a whole
lot of problems including NCDs like:
- Hypertension and cardiovascular diseases
- Diabetes mellitus and it’s
complications
- COPD, obstructive sleep panda and
other respiratory issues
- Arthritis and other musculoskeletal
problems
In addition
to the above health risks, there are social implications of childhood obesity. Most
times, these children tend to be mocked, bullied and teased a lot leading to
psychosocial problems such as depression, poor self-esteem and anxiety disorders.
And of course, those with poor coping mechanisms and weak support systems can
engage in violence, drug addiction and even more overfeeding detrimental to
themselves and the society. The natural question that follows is: What can be
done to address this problem? Well, there’s a lot but we have to first understand
the factors that are responsible. It is not difficult to see why diet is an
important factor; the more you eat, the more likely you are to grow fatter
though this is rather too simplistic as some diets like high energy, carbohydrate
and trans fat diet are more likely to make one fat than fruits and vegetables. The
increase in snacks, sweet and sugary products partly account for the increasing
rate of obesity in children. However, that is not full piece of the puzzle; the
increasing sedentary lifestyle due to technological advancements is another important
factor. Children spend most of their time on TV, video games or with their
mobile phones or laptops surfing the internet, they don’t burn off their extra
calories which leads to weight gain. These two factors, diet and physical
inactivity remain the major focus of most interventions in childhood overweight
and obesity.
There
are three groups of interventions: government,
population and community based interventions. Government interventions can include
dedicated investment in health promotion by using food policies like import
tariffs and taxes on unhealthy foods and subsidies on healthy foods. Additionally,
policies to incorporate teaching the importance of good diet and physical activity
on health are effective. Population wide policies include traffic light
labelling of products, restriction in television advertising of snacks, drinks rich
in sugar and trans-fat as exemplified by Denmark, increased provision of fruits
and vegetables to school canteens, provision of school playgrounds and
incorporating exercise in daily school schedule. These interventions should
involve key stakeholders in the community and tailored to fit into the culture
and organisation of the community to ensure high level of participation and
success.
Finally,
there’s actually so much parents can do for their overweight or obese children,
although it still revolves around better diet and physical activity. Parents
may have to restrict their child’s intake of sugary or high carb foods. It is
also important to start at an early age to always make fruits and vegetables available
as well as keep snacks away from the house since feeding habits are formed at an
early age. Also you may want to go for a walk on evenings or on weekends if you’re
busy which not only increases physical activity but also gives you enough
bonding time. Children should be encouraged to engage in other forms of leisure
aside from watching TV and playing video games. Outdoor sports like football, running
and some time out with friends are great ways to pass time and would help in
better social development for your child.
When you say the word addiction, people tend to think alcohol, marijuana,
crack, opioids and the like; of course, they’ve caused a lot of deaths; opioids
alone account for over 40,000 deaths (50% of all overdose deaths).However, to
think that drug addiction is the only form of addiction is nothing further from
the truth. The fact is that there are a lot of things one can get addicted to… thinking
of it scientifically, one actually gets addicted to the reward system in the
brain not the substance or action itself. These substances cause addiction
because they cause a potent rise in the dopamine level in the brain; hence, the
likelihood of a substance to cause addiction depends on the level of dopamine
rise in the brain. This is why we don’t get addicted to other things like
washing clothes or cooking. What this means in essence is that if something
gives you as much or even greater dopamine rush as marijuana, it would probably
lead to an addiction. Such is the case with internet addiction, the 21st
century wave of behavioural addiction gradually eating into the lives of our
youth particularly the adolescents and teenagers.
It is really difficult to comprehend the effects of internet addiction since
it has not been recognised by the DSM or ICD as a distinct condition; however
it is quite easy to see its impacts on the society. Why is internet addiction
becoming an increasing problem? possibly the dramatic shift in social life of
recent times in addition to the anonymity, affordability and accessibility of
internet makes it very available and consequently, addicting. There are various
forms of internet addiction including:
- Online pornography: It
is very easy to see why pornography can be very addictive knowing that sex is a
primitive human drive. Individuals easily browse through videos of
inappropriate sexual content eventually leading sexual problems like premature
ejaculation and erectile dysfunction
- Online video gaming: A
long recognised problem particularly in Asian countries- here, individuals
immerse themselves in virtual reality where they connect with multiple players
anywhere in the world. With well-known recorded deaths of people playing games
days without food, some countries like China are already placing restrictions
to use and including it as a psychiatric condition
- Social media: Here, individuals
connect to friends via social media platforms like Facebook, Whatsapp, Twitter
etc. However, due to the changing social system, individuals are relying more
on social media even when there is room for tangible conversation; it is
relatively common these days to see a group of individuals sit close to each
other busy chatting online without exchanging a single word. There is
compulsive and insatiable need to acquire more friends for their sense of ego
and identity; mostly due to weak psychosocial support around the individual.
Whether its compulsive use of the internet for pornography or
inappropriate sexual content, gaming, chatting etc, these behavioural
addictions may actually develop as a form of escape from an uncomfortable
reality, for example poor interpersonal relationships and psychosocial support
system, the individual is confronted with. And of course, it makes to address
this problem by building better support system in communities, in schools, religious
gatherings and creating awareness of these problems to encourage parents to
help their children build positive interpersonal relationships and avoid social
exclusion. For individuals struggling with these addictions, there are also
treatment options similar to other forms of addiction though they are not
standardised as internet addiction is not yet recognised as a distinct
disorder. There should be stronger advocacy to include this as a separate
entity.
The human body has a remarkable ability to adapt to variable cold
weather conditions because as the environmental temperature reduces, the body
adjusts by increasing heat gain through shivering, reduced sweating and increased
physical activity. However, if there is as little as more than 2° drop in the body
temperature due to exposure to extreme cold weather conditions, the body may
lose its ability to maintain the core body temperature around normal range which
can cause a number of deaths that are preventable when proper measures are taken.
Just as hot weather and heat related problems are not limited to hotter parts
of the world like middle east and Africa, cold weather exposure and cold
related problems are also not limited to very cold parts of the world .Thus, the
unique and paradoxical nature of the climate change problem- everywhere is
getting hotter and colder!!!Although this is a general public health concern, Canada
and other colder parts of the world like Russia and Iceland face more cold
related health problems.
These problems can range from lifestyle limitations to predisposition to
some health conditions and injuries. If you’ve lived in Canada, for example, you
would have probably woken up to find your door covered in ice, plus the weather
can be so cold that the streets will be covered in snow- these can really
affect movement leading to physical inactivity. Moreover, some people tend to
smoke more to keep warm; this negative lifestyle modification can adversely
affect health since smoking is a risk factor for many chronic health conditions.
In addition to the hindrance to movement and lifestyle changes, people may feel
a numbing sensation on their fingertips… something medically referred to as raynaud
phenomenon, particularly common in very cold temperatures. For asthmatic or
allergic people, there may be significant increase and more frequent puffs of their
inhaler. There are also more common upper respiratory tract infections, mostly viral-like
common cold which tend to resolve on their own. Finally, there are cold related
injuries which mostly affect people that work outside. These include
- Chilblains: redness, itching,
swelling due to repeated exposure to temperatures above 0° but less than 16°
- Trench foot and
immersion foot: pain, swelling, tingling on the legs or rarely the hands due to
prolonged exposure to wet and cold conditions
- Frost nip and frost
bites: these are freezing cold injuries that result in pain, stinging skin
sensation, paleness and waxy skin. It usually starts on the extremities such as
skin of the toes, fingers, ear lobes, nose and cheeks but in more serious cases
can involve more body parts.
These injuries can be prevented by staying indoors and going out only
when necessary. Also, dressing warm before going out and keeping up with daily
weather advice are essential to protecting oneself from extreme cold. Unfortunately,
if you’re ever affected or happen to be around an individual affected by these
cold injuries, carefully follow the following first aid tips by CCOHS:
- Never ignore numbness. If you feel numb or
tingly, take steps to warm the area immediately. (e.g., put your hands
under your armpits, or pull your arms into the inside of your jacket for
more direct contact with the body)
- If possible, move the victim to a warm area.
- Remove wet clothing, and gently loosen or remove
constricting clothing or jewellery that may restrict circulation.
- Warm the person by wrapping them in blankets or
by putting them on dry clothing. Cover the head and neck. Warm the person
slowly. Avoid direct heat which can burn the skin.
- Loosely cover the affected area with a sterile
dressing. Place some gauze between fingers and toes to absorb moisture and
prevent them from sticking together.
- If the person is alert, give them liquids to
drink.
- Check for signs of hypothermia and seek medical
attention. If necessary quickly transport the victim to an emergency care
facility
- Treat the person gently and monitor breathing
- DO NOT attempt to rewarm any affected frostbite
area
- DO NOT thaw the area if it could freeze again
- DO NOT rub area or apply snow
- DO NOT permit victim
to drink alcohol or smoke
Conclusively, prolonged exposure to cold with complete loss of the body’s thermoregulatory system can result in hypothermia-the most serious condition of cold exposure and a medical emergency. Hence, if a victim progresses from vigorous shivering, complaining of cold, impaired judgement and lack of coordination to unresponsiveness, reduced or no shivering and no pulse, quickly separate the victim from cold when you recognize the symptoms, do a CPR and seek medical help immediately.
Extreme temperatures are temperatures that fluctuate plus or minus 10 degrees or more above or below the average high and low temperatures for a particular region at a particular season, and last for several weeks. In terms of extreme heat exposure, our bodies have a remarkable ability to adapt to variable hot weather conditions. This is because the body temperature increases when net heat gain from the environment and the body itself is more than heat loss. Practically, the body needs to maintain its temperature which is about 37.4° around relatively higher temperatures without more than 3°rise in its core temperature. This is necessary for survival.
Extreme hot weather conditions are seen predominantly in African countries but also exist in some European countries, some parts of the US, UK and others during a heat wave. A heat wave is 5 or more consecutive days of prolonged heat in which the daily maximum temperature is higher than the average maximum temperature by 5 °C or more as defined by the World Meteorological Association, however, this definition may differ by country. High temperatures have become an increasing public health concern not only because they cause a number of preventable deaths particularly in children, elderly and pregnant women but they are also worsening due to global warming. People that have experienced these hot conditions can attest to their negative health impacts such as an overall decrease in work performance or a gradual decline in health and wellness. These are due to the indirect psychological stress that heat can put on the human brain. Other direct health problems that can result with extreme heat and increasing temperature include;
- Heat rash: rashes that develop due to heat
- Heat cramps: severe painful muscle cramps mostly in intense exertion due to strenuous exercise
- Heat syncope: fainting spells that occur due to fluid and electrolyte loss during profuse sweating
- Heat exhaustion: loss in the body’s ability to regulate heat leading to marked derangement in most body systems.
- Heat stroke: the most extreme case known as hyperthermia where there is severe dehydration and impaired neurological functions (loss of consciousness, seizures and possibly death)
In addition to its effects on the body, extreme heat can put pressure on electricity and power distribution due to increased air conditioner use. Heat waves can also cause other problems like damage to roads and railway. Finally, it has largely contributed to the increased frequency and severity of wildfires such as the amazon fires. The outlook would continue to worsen if we fold our arms because global warming would keep increasing the temperature of our environment. Therefore, there has to be more serious commitment to our global action on climate change if we are serious at all about these public health problems. For individual problems, some of these tips may help:
- Stay hydrated with water not alcohol or caffeine as most health effects
are due to fluid and electrolyte loss
- Reduce exposure by removing clothing to create room for heat loss
- Stop or reduce exercise or physical activity because they work the muscles
and increase core body temperature
- Take cold baths and rest on a light bed linen not cushion
- Wear loose fitting clothes, wide hats and sunglasses to protect oneself when
going out
- Reduce heat load in the house by turning off as much electrical
appliances as possible
- Hang wet towels in airy places and close the windows directly facing the
sun during the day
- Spend the most time in the coolest parts of the house
- Avoid going out in very hot periods and use shades when out
- Check on family especially children and elderly
- Do not stay or leave people in confined areas like cars, particularly
children
- Contact a health professional if you experience any problems
The recent anti vaccination campaigns, conspiracy theories and possible
links to conditions like autism have caused us to rethink the use of mass
vaccination. The questions on everyone minds are: should we continue mass
vaccination? Is vaccination a safe public health measure? These questions, in
recent times, have become socio political, medical, religious and even ethical.
The socio political basis of the argument is due to the fact that some
political groups like the liberalists are against forced vaccination due to
liberality. Also, there are some conspiracy theories about their use in regional
subjugation through the spread of infectious agents. The medical argument of
course comes from the potential adverse effects and concerns over potentially
harmful agents like thimerosal (a mercury containing compound)that have been
phased out in many countries including Canada.
The concerns about the public health safety of vaccination exist because
of the potential harm that vaccines can cause. Let us briefly discuss vaccines
to understand why this potential harm exists. Vaccination is the administration
of vaccines (which contain a microorganisms in a weakened or killed state, or
proteins or toxins from the organism) in order to stimulate the immune system
to defend against an infectious agent. Generally, the closer the organism or
virus resembles the original organism, the more the immune response that would
be generated but the more likely it would reverse to the original organism,
that is, the more the potency the less safe it is. This risk of reversion is
why vaccines are contraindicated in high risk groups such as:
- Children
- Elderly
- Pregnant women
- Immune-compromised individuals e.g. AIDS patients
- Individuals under immunosuppressive therapy
Despite these risks, vaccination is recommended for some group of people
because they are more likely to be exposed to an infectious agent. These groups
include:
- Health workers and Vetenarians
- Travellers moving to areas of high endemicity
- Explorers and researchers moving to wild regions
- Children going to public schools
Amidst the debate, the answer to the question “should we continue
mass vaccination?” remains a RESOUNDING YES! Why? Let us look at these facts
- Immunization currently prevents 2-3 million deaths
every year
- Over 1.5 million children die annually from diseases
that can be prevented by vaccination
- Since 2000, 2.5 billion children have been vaccinated
and the number of polio cases has fallen by more than 99%, dropping to just 22
cases in 2017
- Measles vaccinations averted an estimated 21.1 million
deaths between 2000 and 2017
And regarding vaccine safety? Vaccination is safe. Even with the ethical
argument about one person in a million being at risk of serious adverse
reaction or toxicity, this is not surprising as no procedure is 100% safe. Consider
this…
- The risk for colonoscopy complications, a routine screening
procedure is about 0.35%
- In Canada, the risk of severe pregnancy complications is
about 1.5% and 1.6%(700 to 900 deaths) each year in the US
- For venepuncture, serious complications are seen in
3.4% of these procedures
Food Safety is a public health issue that involves the handling, preparation
and storage of foods in ways that prevent or reduce the risk of contamination
from external sources. Consumption of contaminated foods results in individuals
becoming sick from the food, referred to as food borne illnesses. Food safety
is a global and public health concern that encompasses a variety of different
areas of everyday life. Food contamination is a part of food safety; there is a
lot more to food safety than handling, preparing and storing foods properly decrease
the chances of contamination. The choice of what and how to eat is perhaps the
most important aspect of food safety. We all have to choose between healthy
diets (diets high in fibre, low in saturated and trans-fat) and unhealthy diets
(diets high in saturated and trans-fat but low in fibre). Unhealthy diet is associated
with chronic diseases like cancers particularly colorectal cancer, diabetes and
heart disease. Beyond these health benefits/risks, it is also important to stay
away from unsafe sea foods such as the puffer fish delicacy. These types of
foods are very common in Asia and cause quite a number of deaths; first timers and
people not used to these foods should make sure they are properly cooked. Not every
food must be eaten!! I mean, you don’t just pick any mushroom in Scandinavia
and eat because you want to eat mushroom. You must check if it has white gills
like most poisonous ones or you run the risk of eating the death cap.
On a daily basis, avoiding spoilt foods, unlabelled or improperly labelled
foods and disfigured canned foods are good food choices. Due to the nature of
the 21st century society, people are switching more to produced and processed
food which are often stored in containers like cans, sachets etc. This has led
to addition of substances to food which act as preservatives, flavours, sweeteners,
stabilizers. These food additives, even though they are added for beneficial
reasons, some of them like nitrates used in meat preservation are dangerous to
health in this case with a known risk of colon cancer. This is why they are
tested and guaranteed by the Joint FAO/WHO Expert Committee on Food Additives
(JECFA); then clearly written on the food label. This helps people to make
better choices if they want to limit the intake of any substance for any
reason.
The case is quite different for food adulteration which involves addition
of inferior and harmful substances that mimic the desired substance but with
reduced quality. It is important to note that food adulteration is a criminal offence
as individuals have the right to expect a certain quality of food they
purchase; and food adulteration tramples on this right with impunity. It is
mostly due to profit drive but can also be due to increased demand and lack of
strong regulatory food laws. Some adulterants and food involved with ways to
detect the adulterant are
- Mustard oil(adulterant is argemone oil): Shake and heat
mustard oil with drops of nitric acid for 2 minutes, argemone oil is present if
it turns red
- Salt/sugar (chalk powder): Stir in a spoonful of the
salt in a glass of water. If the solution turns white and a residue settles at
the bottom, it indicates the presence of chalk.
- Turmeric powder (adulterant-metanil yellow, chalk
powder, lead chromate): Add a teaspoon of turmeric to a glass of warm water. Do
not stir it and leave it still for a while. Check after about 20 minutes. If
the powder settles down at the bottom of the glass with clear water above, the
turmeric is pure.
- Chilli powder(brick powder): Adulterant settles on
addition of water
These imitations pose serious health risk to consumers and must be taken
seriously. As many persons are ignorant of them and the fact that people will
not usually carry out these tests, it left for the government to enact strong
regulatory laws and policies along with strong surveillance systems to stop
this menace. Finally, the fuss about genetically modified foods (or bioengineered
foods if you like) deserves mention. Whether
GMOs have future harmful effects is unproven but the general consensus is that
they are at least safe for now.