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Published on: Jul 17, 2020
2 minute read
By: Dr Rajan Choudhary

MRNA Vaccine Against SARS CoV2

An mRNA Vaccine against SARS CoV2

We have previously discussed vaccines against SARS-CoV-2, the virus responsible for COVID-19. On the 14th of July, a preliminary study was published in the New England Journal of Medicine, an internationally reputable medical journal. This study looks at mRNA vaccines in Phase 1 human clinical trials, a first for the virus. Here we will discuss what this means and the results of the study.

mRNA vaccine

Vaccines target the immune system’s memory by presenting them with pieces of these infective diseases. The small amounts do not cause any infective symptoms, but if the person is infected later in life their body will mount a quicker response and prevent them from falling ill. These vaccines can contain broken up parts of the organisms, “dead” organisms or “live” versions that have been severely weakened so they cannot cause any harm.

In 2018 a new type of vaccine was described. Instead of using pre-made protein markers that identify infectious organisms, mRNA vaccines contain genetic material with instructions to produce these markers. Once injected, the person’s cells use these instructions to produce copies of these protein markers. These markers are displayed on the surface of the cell, which in turn is recognized by the immune system, initiating an immune response and producing protective antibodies.

BENEFITS

A major advantage of RNA vaccines is the ease by which they can be made in a laboratory from a DNA template. During a pandemic, this would result in a rapid response and vaccine against a new disease. Conventional vaccines require the use of chicken eggs or cells to produce the vaccines, which can be expensive and time-consuming. These vaccines can be delivered via injections into the skin, blood, muscle, or organs, needle-free into the skin, or via nasal spray. Because these vaccines are so new, we still do not know the best way to deliver it.

Because these vaccines are not made with parts of infective organisms or from live organisms, they are not infectious and will not cause harm through a strong immune response to the vaccine itself, or by causing the disease they aim to vaccinate against. They also appear to be very efficient at generating a reliable immune response to produce antibodies and are well tolerated with few side effects.

NEEDS IMPROVEMENT

Because these types of vaccines are so new there is still a lot we do not understand about them. They may cause unintended effects that we have not yet encountered in human clinical studies. These vaccines also need to be frozen or refrigerated, and so would not be suitable for countries with limited or no refrigeration facilities.

COVID

The SARS-CoV-2 mRNA vaccine codes for one of the virus’ surface spike proteins, responsible for recognizing target cells and fusing the virus into the cell for entry and infection. It was previously recognized as a target for the SARS and MERS viruses.

45 participants received 2 intramuscular injections 28 days apart. None of the participants had any serious side effects after the first injection, or any side effects significant enough to stop the trial. Many had minor to moderate side effects after their second injection (such as fatigue, chills, headache, myalgia, and pain at the injection site), and half the participants taking high dose vaccines had febrile side effects. Overall the side effects were rated as acceptable.

Prior to the vaccine trials, none of the participants had any antibodies against COVID, or any capacity to stop a COIVD infection. After the injections, all participants had noticeable increases in antibodies produced, measurable in their blood. After 43 days, the participant's blood had enough antibodies to reduce infection by SARS-CoV-2 by over 80%.

What is the takeaway? The vaccine is capable of producing an adequate response to protect the vaccine recipient without eliciting any major side effects. These results will be used in phase 2 clinical trials (enrolment began in May) and a phase 3 trial in July 2020. Essentially this means further human trials to further look for side effects in a larger number of volunteers with a more diverse health profile.

This represents an interesting development in producing a rapid vaccine against a new virus responsible for a world-changing pandemic. This new type of vaccine may be the future of vaccines for a broader range of viruses, bacteria, and even cancers.

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Monthly Health Survey via SecondMedic App: A Smarter Approach to Preventive Healthcare

Healthcare is gradually shifting from reactive treatment to proactive prevention. Traditional health models rely heavily on annual checkups or medical visits only after symptoms become severe. However, many chronic and lifestyle-related conditions develop silently over time. The Monthly Health Survey via the SecondMedic App addresses this gap by enabling continuous health monitoring and early risk identification.

According to the Indian Council of Medical Research (ICMR) and NITI Aayog, early detection and preventive care are critical to reducing the growing burden of non-communicable diseases in India. Digital health tools play a key role in achieving this shift.

What Is the Monthly Health Survey?

The Monthly Health Survey is a structured digital questionnaire delivered through the SecondMedic App. It captures key health indicators such as:

recurring symptoms
lifestyle habits
stress and sleep patterns
nutrition and activity levels
chronic condition markers

By repeating the survey monthly, subtle health trends become visible.

Why Monthly Health Tracking Matters

Annual Checkups Miss Gradual Changes

Many health issues develop slowly. Annual tests may appear normal while symptoms quietly progress between visits.

Monthly surveys:

detect early warning signs
capture symptom patterns
identify lifestyle-related risks

Health Is Dynamic, Not Static

Stress, sleep, diet and activity fluctuate monthly. Regular tracking reflects real-life health variation more accurately than isolated tests.

How the Monthly Health Survey Works

Each month, users answer a guided set of questions related to:

physical symptoms
mental wellbeing
lifestyle behaviours
known medical conditions

The app analyses responses to highlight:

risk trends
symptom persistence
areas needing attention

This structured approach simplifies health awareness.

Key Health Areas Covered

Symptom Monitoring

Persistent fatigue, headaches, breathlessness or digestive issues are tracked across months to identify patterns.

Lifestyle Risk Factors

The survey captures:

sedentary behaviour
sleep quality
stress levels
dietary habits

These factors strongly influence long-term health outcomes.

Chronic Disease Indicators

For individuals with diabetes, hypertension or thyroid conditions, monthly monitoring supports better disease control and early escalation.

Role in Preventive Healthcare

Preventive healthcare focuses on stopping disease before complications arise.

Monthly health surveys support prevention by:

identifying risks early
prompting timely consultations
supporting lifestyle modification
reducing emergency care needs

WHO and NITI Aayog both highlight digital monitoring as a cornerstone of preventive health systems.

Benefits for Individuals

Early Awareness

Users become aware of health changes before symptoms become severe.

Empowered Decision-Making

Access to regular health insights encourages proactive lifestyle choices.

Reduced Anxiety

Structured tracking reduces uncertainty and fear about unexplained symptoms.

Better Doctor Consultations

Survey data provides doctors with a clearer health history, improving consultation quality.

Benefits for Chronic Care Management

For chronic conditions, consistency is key.

Monthly surveys help:

track symptom control
identify early deterioration
support medication adherence
reduce complications

This continuous loop improves long-term outcomes.

Data-Driven Personalised Care

The survey supports personalised care by:

tailoring recommendations
prioritising high-risk users
guiding preventive interventions

This approach moves healthcare from generic advice to individualised guidance.

Privacy and Responsible Use

Health data is sensitive.

The survey framework is designed to:

collect only relevant information
support medical decision-making
maintain confidentiality

Responsible data use builds trust and long-term engagement.

Why Digital Surveys Are Effective in India

India’s healthcare challenges include:

large population
limited access to preventive care
high lifestyle disease burden

Digital surveys overcome barriers by:

being accessible anywhere
requiring minimal time
enabling large-scale preventive monitoring

This scalability makes them highly impactful.

Integration with Broader Health Ecosystems

Monthly health surveys work best when integrated with:

medical consultations
diagnostic services
preventive checkups
digital health records

Integration ensures continuity of care.

Long-Term Impact on Healthcare Outcomes

Over time, regular health tracking leads to:

earlier diagnoses
reduced hospitalisations
better chronic disease control
lower healthcare costs
improved quality of life

Lancet studies show that continuous monitoring significantly improves preventive outcomes.

Who Should Use a Monthly Health Survey?

adults over 30
individuals with chronic conditions
people with high-stress lifestyles
those focusing on preventive health
corporate wellness participants

Proactive monitoring benefits all age groups.

Conclusion

The Monthly Health Survey via the SecondMedic App represents a modern, preventive approach to healthcare. By capturing health trends regularly rather than annually, it empowers individuals to act early, supports doctors with better insights and reduces the burden of advanced disease. In an era where prevention is the most effective medicine, monthly health surveys transform awareness into action and data into healthier lives.

References

Indian Council of Medical Research (ICMR) – Preventive Healthcare and Early Detection Report
NITI Aayog – Digital Health and Preventive Care Strateg
World Health Organization (WHO) – Digital Health Monitoring Guideline
Lancet – Preventive Healthcare and Continuous Monitoring Studies
National Health Authority – Digital Health Mission Indi
Statista – Digital Health App Adoption Trends India

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