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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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Weekly Health Roundup Newsletter: India’s Trusted Source for Preventive Wellness Insights

Health information today is abundant, but not always reliable. With countless articles, social media trends, home remedies and conflicting opinions, individuals often struggle to separate credible medical advice from misinformation. This challenge becomes especially significant in India, where rising lifestyle diseases, nutritional gaps and limited public health awareness create a pressing need for accurate guidance.

The Weekly Health Roundup Newsletter by SecondMedic addresses this gap by offering a clear, expert-driven and accessible summary of everything people need to know about their health each week. Designed for families, patients, caregivers and wellness-focused readers, it transforms medical updates into practical, everyday insights.

Why India Needs a Weekly Health Roundup

1. Growing Lifestyle Disease Burden

ICMR and NFHS-5 highlight significant increases in:

Diabetes
Heart disease
Thyroid disorders
Obesity
PCOS

A weekly educational resource empowers individuals to make preventive choices before complications arise.

2. Overload of Health Information

Millions of Indians rely on social media for health advice, leading to confusion and misinformation.
A curated newsletter ensures accuracy.

3. Rising Interest in Preventive Healthcare

People want to understand their bodies better, track health metrics and adopt healthier lifestyles.
The newsletter provides guidance supported by medical evidence.

4. Technological Growth in Healthcare

AI-based tools, wearables and digital monitoring are reshaping healthcare.
Readers learn how to use them effectively.

What the Weekly Health Roundup Covers

• Medical Research Summaries

Digestible versions of new findings from:

ICMR
WHO
Lancet
NITI Aayog
Global medical journals

• Nutrition and Lifestyle Guidance

Includes:

Balanced diets
Myth-busting
Portion control
Affordable nutrition ideas for Indian households

• Chronic Disease Management Tips

Expert insights on:

Diabetes control
Heart health
Blood pressure
Hormonal disorders

• Mental Wellbeing

Stress reduction, emotional resilience and sleep optimisation tips.

• Fitness Recommendations

Simple routines, mobility tips, strength guidance and step-based activity recommendations.

• Seasonal Health Alerts

Information on:

Pollution
Heatwaves
Monsoon infections
Viral outbreaks

• Digital Health Education

Guidance on:

AI health tools
Wearable devices
Teleconsultation benefits
Remote monitoring

How SecondMedic Ensures Accuracy and Quality

Expert Verification

Doctors, nutritionists, physiotherapists and mental health specialists review every issue.

Evidence-Based Approach

Content uses:

Peer-reviewed studies
Real-world health data
National and global guidelines

Personalised Relevance

Topics are selected based on what Indian families most commonly search, ask or struggle with.

Preventive Care Focus

Instead of addressing illness alone, the newsletter promotes long-term lifestyle improvement.

How Readers Benefit

1. Improved Health Literacy

People understand conditions earlier and seek help at the right time.

2. Practical, Actionable Advice

The newsletter offers:

Simple diet swaps
Daily routine tips
Easy-to-follow health habits

3. Early Detection Support

By recognizing symptoms and risk patterns, individuals can prevent complications.

4. Better Use of Digital Tools

Readers learn how AI health guides and wearables support monitoring and early intervention.

5. Family-Centered Wellness

Content is relevant to:

Children
Working adults
Elderly individuals
Chronic disease patients

Example Weekly Topics

A sample edition may include:

"New Findings on Vitamin D Deficiency in Indian Adults"
"How to Interpret Your Blood Sugar Patterns"
"5 AI Tools That Improve Home Health Monitoring"
"Early Signs of Heart Disease You Shouldn’t Ignore"
"Preventive Care Checklist for Busy Professionals"

Conclusion

The Weekly Health Roundup Newsletter is more than just a health update-it is a practical wellness companion. With expert insights, scientific clarity and personalised relevance, it empowers people across India to make smarter health decisions every week.

By turning complex medical knowledge into everyday guidance, SecondMedic strengthens India’s preventive healthcare movement one newsletter at a time.

References

• ICMR - Lifestyle Disease Burden & Research Updates
• NFHS-5 - National Health Indicators & Wellness Trends
• NITI Aayog - Digital Health & Preventive Care Framework
• WHO - Global Wellness & Preventive Healthcare Guidelines
• Lancet - Public Health Research & Behaviour Studies
• Statista India - Digital Health Usage & Reader Behaviour
• EY-FICCI - Health Awareness & Preventive Care Landscape

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