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Published on: Jul 22, 2020
2 minute read
By: Dr Rajan Choudhary

The Oxford Vaccine

Recently we wrote a blog on the success of an RNA vaccine against SARS-CoV-2, the virus responsible for COVID-19. Within just a few weeks of that incredible research breakthrough, researchers at Oxford University’s Jenner Institute have announced a COVID vaccine that has induced remarkable immune response against the virus.

This study was published in the Lancet, one of the most prestigious medical journals in the world, and a simple summary suggests the vaccine has no early safety concern and is able to induce a strong immune response with both T cells and B cell/antibodies.

THE VACCINE

ChAdOx1 nCoV-19, now known as AZD1222, was co-developed by the University of Oxford and one of its spin-off companies, Vaccitech. The vaccine uses a viral vector based on a common cold virus (adenovirus). This carries genetic material for the SARS-CoV-2 spike protein. In our previous blog, we saw how the spike proteins are used by the virus to target and fuse with our target cells, allowing the virus to invade, replicate and ultimately cause the disease known as COVID. It is also a good target for the human immune system to recognize and attack.

The viral vector delivers the genetic material inside our cells. The spike protein is then produced by our cells, recognized by the immune system as a viral target, and an immune response is created against it. This can be antibodies, which recognize, attach to and mark the virus in our blood, allowing for other white blood cells to destroy the virus.

In this case, the vaccine also produced a T cell response. T cells can recognize cells infected by a virus-based on the markers present on the surface of infected cells. They can tell an infected cell to destroy itself, thereby destroying the virus within without spreading the infection. They also have other functions that we will not discuss in this blog.

THE STUDY

This study was a Phase I/II trial that started in April using the vaccine named ChAdOx1 nCoV-19. This vaccine development started in January 2020, and progress on development has been incredibly rapid. Whilst our previous study had just 45 people, this study looked reviewed over 1,000 healthy adults. 10 of these participants received two doses of the vaccine.

In a study the more participants there are, the greater the power of the study. If the vaccine has any side effects, even ones that rarely occur, it is more likely to be picked up in studies with more people. Similarly having more people helps show that the vaccine is effective, and the strong responses are not merely a fluke or accident. Another benefit of this study is it was able to compare the vaccine against a control group. This shows the results were not simply a placebo and allowed comparison of side effects as well.

The majority of side effects were feeling feverish, chills, muscle ache, headache, and malaise, all symptoms treatable with paracetamol. None of the participants had any serious side effects. It took just 14 days to create a T cell response, and 28 days to make strong antibodies. In 91% of patients, this was enough to neutralize the COVID coronavirus. Receiving two doses gave an even stronger antibody response, and all participants were able to stop the virus.

WHAT NEXT

The news from the University of Oxford is needed, as infection rate and mortality continue to increase in countries such as the US and Brazil. The ability to induce an antibody response without causing harm to the patient shows we have made huge progress in the fight against COVID-19. Further Large scale Phase III trials been set up through a global partnership, and include studies in the US with over 30,000 patients, studies in children as well as some in low to middle-income countries.

If successful a vaccine would be essential in preventing a second wave of COVID in the winter when the elderly population is most at risk. And it would be the key to restarting the economy and getting our everyday lives back to where it was pre-pandemic.

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5K Run for a Cause: How Community Fitness Drives Preventive Health Awareness

Physical activity is one of the most effective tools for disease prevention, yet it remains underutilised in everyday life. Community-based fitness initiatives such as a 5K Run for a Cause play a powerful role in bridging this gap by making movement accessible, meaningful and socially engaging. These events combine the benefits of exercise with awareness-building, creating lasting impact on public health.

In India, lifestyle-related diseases such as diabetes, heart disease and obesity are rising rapidly. According to the Indian Council of Medical Research (ICMR) and National Family Health Survey (NFHS-5), physical inactivity is a major contributor to this growing burden. Events that encourage structured, enjoyable physical activity help counter this trend.

What Is a 5K Run for a Cause?

A 5K Run for a Cause is a short-distance running or walking event designed to promote fitness while supporting a health, social or community objective. Participants may run, jog or walk the 5-kilometre distance, making the event inclusive for people of varying fitness levels.

Beyond physical activity, these runs aim to:

raise awareness about preventive health
encourage active lifestyles
build community participation
support wellness-driven causes

Why 5K Is an Ideal Distance

The 5-kilometre distance is widely recognised as:

achievable for beginners
challenging enough to promote fitness
safe for most age groups with minimal training

WHO physical activity guidelines support moderate-intensity exercise like running or brisk walking for improving cardiovascular and metabolic health.

Health Benefits of Participating in a 5K Run

Improved Cardiovascular Health

Running and brisk walking strengthen the heart, improve circulation and lower blood pressure. Regular participation reduces the risk of heart disease and stroke.

Better Metabolic Health

Physical activity improves insulin sensitivity and supports weight management. ICMR data shows that regular movement significantly reduces diabetes risk.

Enhanced Mental Wellbeing

Exercise releases endorphins that reduce stress, anxiety and depression. Community runs add a social element that further supports mental health.

Improved Musculoskeletal Strength

Running strengthens muscles, bones and joints, reducing the risk of age-related mobility issues.

Role of 5K Runs in Preventive Healthcare

Preventive healthcare focuses on reducing disease risk before illness develops. A 5K Run for a Cause supports prevention by:

promoting physical activity
encouraging regular movement habits
raising awareness about lifestyle diseases
motivating health-conscious behaviour

NITI Aayog identifies physical activity promotion as a key pillar of preventive healthcare in India.

Community Impact of a 5K Run for a Cause

Building Health Awareness

Runs often highlight specific causes such as heart health, diabetes prevention or mental wellbeing, reinforcing public health messages.

Strengthening Social Bonds

Community participation fosters shared goals and mutual motivation, increasing long-term adherence to healthy habits.

Encouraging Family Participation

Inclusive events encourage families to adopt healthier lifestyles together.

5K Runs and Corporate Wellness Programs

Corporate wellness programs increasingly include physical activity initiatives.

Benefits for organisations include:

improved employee engagement
reduced absenteeism
enhanced team bonding
positive employer branding

EY-FICCI reports show that wellness initiatives focused on physical activity deliver strong participation and measurable health benefits.

Accessibility and Inclusivity

A key strength of 5K runs is inclusivity.

They accommodate:

first-time runners
walkers
older adults
people transitioning to active lifestyles

This inclusiveness reduces barriers to participation.

Supporting Long-Term Behaviour Change

One-time events create awareness, but their true value lies in inspiring long-term change.

Participants often:

continue walking or running regularly
become more conscious of fitness
seek preventive health checkups

Lancet studies indicate that community-based physical activity initiatives can influence long-term health behaviours.

Safety and Health Considerations

For safe participation:

individuals should assess fitness levels
warm-up and cool-down are essential
hydration should be prioritised
those with medical conditions should seek medical advice

Proper guidance ensures benefits without injury.

Role of Awareness and Education

Successful runs integrate education through:

health talks
informational materials
screening camps
wellness resources

This combination reinforces preventive health messages.

Measuring Impact

Impact can be assessed through:

participation rates
follow-up health initiatives
employee engagement metrics
community feedback

Data-driven evaluation improves future program design.

Why 5K Runs Matter in India

India faces challenges such as:

rising sedentary lifestyles
limited health awareness
increasing chronic disease burden

Community fitness events provide a scalable, low-cost solution to promote active living and prevention.

Conclusion

A 5K Run for a Cause is more than a fitness event—it is a preventive health movement. By combining physical activity with purpose, these runs encourage healthier lifestyles, strengthen community bonds and raise awareness about long-term wellbeing. In a country where lifestyle diseases are growing rapidly, initiatives that make movement accessible and meaningful are essential. A simple 5K run can be a powerful step toward a healthier, more active society.

References

ICMR – Physical Activity and Lifestyle Disease Prevention Reports
National Family Health Survey (NFHS-5) – Physical Activity and Health Data
NITI Aayog – Preventive Healthcare and Physical Activity Promotion Strategy
WHO – Physical Activity and Health Guideline
Lancet – Community Fitness and Preventive Health Studies
Statista – Fitness Events and Participation Trends India
EY-FICCI – Corporate Wellness and Physical Activity Reports

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