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Published on: Nov 13, 2020
2 minute read
By: Dr Rajan ( Medical Second Opinion Cell)

What Are Some Common Side Effects Of The COVID-19 Vaccine?

COVID Vaccine, the Pfizer update

On Monday Pfizer announced to the world the vaccine, once it has been developing with Germany's BioNTech, was found to be more than 90?fective. If this is substantiated, it may be possible for countries to receive the vaccine before the end of the year.

The Vaccine is an mRNA Vaccine, a novel method that introduces viral RNA into the body via a viral coat. The vaccine is incorporated into the person's cell, where the viral RNA is read and viral proteins are produced, including the coronavirus coat proteins. As the body reads and recognizes these proteins, it produces antibodies against these viral proteins and activates immune T cells against the virus.

The Pfizer results are based of a phase 3 clinical trial with 43, 538 participants with a diverse background. In this trial, the participants were split between those receiving a vaccine, and those who received a placebo with no effect. The vaccine is administered in two parts, with a 90?ficacy obtained 7 days after the second dose. This would mean a person is vaccinated just 28 days after the initial vaccination.

The FDA usually looks for a minimum 50?ficacy in vaccination when approving new vaccines. It may surprise you that the annual flu jab is also estimated to be 50?fective. The data from Pfizer was verified by an external, independent Data Monitoring Committee. It used data from 94 patients enrolled in the trial and subsequently developed COVID. It is from this groupset that 90% of efficacy is obtained. This is not the final data analysis, and further publications are expected in late November, with a potential FDA Emergency Use Authorisation approval if the data continues to show promise.

If approved, Pfizer has the ability to make 50 million shots before the end of the year, and 1.3 billion by the end of 2021. Many countries are clamoring for their fair share of these limited resources; the US has already negotiated 200m shots, UK 50m, and Germany (one of the major financers for the Pfizer vaccine) over 300m for European Countries.

We should emphasize that rapid vaccine development on this scale at this speed was unheard of prior to COVID. Usually, the animal studies for vaccines can take 1-2 years. In that time Pfizer and others have managed phase 1-3 clinical trials in humans, something that usually takes upwards of 10 years.

There are many unanswered questions that remain from this information.

How safe is the vaccine? Whilst safety information was not published, overall the vaccine appears to have minimal side effects. This is particularly difficult to state however since mRNA vaccines have never been used in people before.
Does the vaccine prevent transmission? In theory, yes. If you are immunized the replication of the virus should be limited significantly, so the number of viruses in each cough will be much lower. However, we do not have data to prove that there is no transmission, but that is also because we have very little data overall.
How long does the protection last? This is a very critical question. The 90?fectiveness rate was calculated just 7 days after the second shot, but it is likely this will change as data is collected over the long term. Some studies have suggested the antibody response fades within months following COVID infection. T Cell immunity on the other hand can stay for years, and it may be the effectiveness of creating a T cell immunity that dictates just how good this vaccine will be .

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20% Health Time | A Smarter Way to Build Workplace Wellbeing

Modern workplaces are increasingly recognising that employee health is not separate from performance—it is foundational to it. Long work hours, constant digital connectivity and rising stress levels have led to burnout, lifestyle diseases and declining engagement across industries. In this context, the concept of 20% Health Time has emerged as a forward-thinking approach to workplace wellness.

20% Health Time allows employees to dedicate a portion of their paid working hours specifically to activities that support physical, mental and preventive health. Rather than treating wellness as an after-hours responsibility, this model integrates health directly into the work culture.

What Is 20% Health Time?

20% Health Time is a structured workplace initiative where employees are encouraged or allowed to spend approximately one-fifth of their working time on health-related activities.

These activities may include:

physical exercise or movement breaks
mental wellness practices
health education sessions
preventive health screenings
stress management and recovery

The core idea is simple: healthier employees perform better and sustain productivity longer.

Why Traditional Wellness Programs Fall Short

Many organisations offer wellness benefits such as gym memberships or annual checkups. While valuable, these programs often fail because:

employees lack time to use them
wellness is seen as optional
participation remains low
benefits are disconnected from daily work

20% Health Time addresses these gaps by embedding wellness into regular work hours.

Why Health Time Matters in Today’s Workplace

Rising Lifestyle Disease Burden

Public health data shows increasing rates of:

diabetes
hypertension
obesity
mental health disorders

These conditions affect working-age adults and directly impact productivity and healthcare costs.

Burnout and Mental Fatigue

Constant pressure and lack of recovery time lead to:

chronic stress
disengagement
absenteeism
high attrition

Health Time creates space for recovery and resilience.

Sedentary Work Culture

Desk-bound work contributes to:

musculoskeletal problems
cardiovascular risk
low energy levels

Dedicated health time encourages movement and prevention.

How 20% Health Time Benefits Employees

Improved Physical Health

Regular movement and preventive care reduce long-term health risks.

Better Mental Wellbeing

Time for mindfulness, rest and stress management improves emotional balance.

Higher Energy and Focus

Healthy routines improve concentration and reduce fatigue.

Empowerment and Autonomy

Employees feel trusted to manage their wellbeing, increasing engagement.

How Employers Benefit from 20% Health Time

Increased Productivity

Healthy employees work more efficiently and make fewer errors.

Reduced Absenteeism

Preventive care lowers sick days and health-related disruptions.

Lower Healthcare Costs

Early detection and healthier habits reduce long-term medical expenses.

Stronger Employer Brand

Wellbeing-focused policies attract and retain top talent.

Sustainable Performance

Health Time supports long-term performance rather than short-term output.

Activities That Fit into 20% Health Time

Organisations can tailor activities based on workforce needs:

guided fitness or yoga sessions
walking or movement breaks
mental health workshops
preventive health checkups
nutrition education
stress and sleep management programs

Flexibility ensures inclusivity across roles and work models.

Evidence Supporting Health Time Initiatives

Workplace health research consistently shows that:

preventive health improves productivity
employee wellbeing programs reduce burnout
time invested in health yields measurable returns

According to WHO and workplace wellness studies, integrated health initiatives deliver better outcomes than standalone benefits.

Addressing Common Concerns

“Will this reduce working hours?”

No. Health Time improves efficiency, offsetting time spent through better performance.

“Is it suitable for high-pressure roles?”

Yes. High-stress roles benefit the most from structured recovery time.

“How do we measure impact?”

Metrics may include:

reduced absenteeism
improved engagement scores
lower healthcare claims
better retention

Implementing 20% Health Time Effectively

Successful implementation requires:

leadership support
clear guidelines
flexible scheduling
inclusive activity options
regular feedback

Health Time works best when seen as a cultural shift, not a perk.

Long-Term Impact on Organisational Health

Over time, organisations adopting Health Time observe:

healthier workforce
improved morale
reduced burnout
stronger team cohesion
sustainable growth

These benefits compound year after year.

Conclusion

20% Health Time represents a progressive shift in how organisations view employee wellbeing. By dedicating work time to health, companies acknowledge that productivity and wellbeing are deeply connected. Rather than reacting to burnout and illness, Health Time promotes prevention, balance and resilience. In a future where talent, performance and sustainability matter more than ever, integrating health into the workday is not a luxury—it is a strategic necessity.

References

World Health Organization (WHO) – Workplace Health Promotion Guidelines
Indian Council of Medical Research (ICMR) – Lifestyle Disease and Work Health Reports
NITI Aayog – Preventive Healthcare and Workforce Wellbeing Strateg
Lancet – Workplace Wellness and Productivity Studies
Harvard Business Review – Employee Wellbeing and Performance Research
Statista – Corporate Wellness Trends and ROI Data

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