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Published on: Apr 04, 2020
3 minute read
By: Dr Rajan Choudhary

Developing A Vaccine For COVID-19? Part 1

It is often stated vaccination has made the greatest contribution to global health of any human discovery, other than clean water and sanitation, and their impact on everyday life is immediately evident. We have managed to completely eradicate two major infections from existence (smallpox and rinderpest) , and the WHO are working towards adding polio to that list.

In these cases the numbers speak for themselves. It is estimated that the eradication of smallpox in 1980 has saved 5 million lives per year, adding up to 150 to 200 million by 2018. Common vaccination programmes for polio, measles, mumps, rubella, rabies and hepatitis A have prevented nearly 200 million cases from occurring in the US alone over the past 50 years, and 4.5 billion instances of the diseases worldwide.

We have achieved a 99% immunisation rate against polio, preventing children from suffering crippling paralysis, and only 3 countries remain. Sadly, around 1.4 million children under 5 still die from preventable diseases each year as they do not have access to these life saving vaccines, but charities and public health organisations around the world are working hard to improve access.

So what are vaccines? And how will they help is in the face of the latest pandemic? Here we will go into the challenges behind making vaccines, and why a vaccine against COVID-19 is unlikely to be ready in the next few months, or even this year.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4024226/ contribution of vaccination

https://www.who.int/features/factfiles/polio/en/ polio eradication

https://www.sciencedaily.com/releases/2017/03/170303163208.htm study article

WHAT IS A VACCINE

The human body’s immune system is incredibly smart. It is able to distinguish between infective organisms, such as bacteria, viruses and parasites, from our own body’s cells, target these invaders for destruction and keep our bodies healthy. Even better, the body remembers any previous infections it has had before, recognise these previous infections even quicker and even eradicate the disease before we know we are infected.

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 summary, medicines treat us when we get an infection. Vaccines make sure we never suffer from an infection in the first place.

https://www.chop.edu/centers-programs/vaccine-education-center/making-vaccines/how-are-vaccines-made Making Vaccines

THE HURDLES WE FACE IN RESEARCH

Making a vaccine is a difficult process, one that can take 3–5 years and cost hundreds of millions of dollars, sometimes billions of dollars. This is because there are many difficult steps to be taken in the process of creating a vaccine that is effective, but more importantly one that is safe.

To start with the troubling organism has to be identified. For COVID-19 it took a few weeks to recognise the virus responsible, and some time more to understand its genetic code and grow the virus in lab conditions. We then have to understand the virus, how it infects, how it causes symptoms, and how it has mutated compared to the coronaviruses responsible for SARS and MERS.

After this, we have to isolate parts of the virus our immune system will recognise. This is usually the outside coat of the virus. The DNA responsible for making these parts need to be found in the virus’ genetic code, and put inside other “skeleton” viruses. This will force the dummy virus to look like coronavirus, without the ability to infect and kill someone.

These dummy viruses can be injected into animals to see if it causes an immune reaction, whether the immune system recognises it as the coronavirus responsible for COVID-19, and whether it will protect the animal from the real COVID-19. Up to now the research has likely cost a few million dollars. The next step is when the price inflates up to billions.

If the vaccine appears safe in animals, it can be tested in humans. This can be dangerous at first, since we don’t know whether a vaccine that works in an animal will work in a human. And we don’t know if there will be any side effects to the vaccine. Human testing has to be very thorough, very careful, and safe for use. If you give too much of the virus it might make the person sick, too little and it wont immunise the person. These clinical trials can take years, and if the vaccine fails at this point its back to the drawing board, to try another step.

https://www.theatlantic.com/politics/archive/2014/10/how-to-make-an-ebola-vaccine-5-simplified-steps/454443/ ebola vaccine

Now we have a basic understanding of what vaccines are and why it takes so long to make a vaccine. In the next part we will look at why viral vaccines can cause even more problems, and how far we have come with the COVID-19 vaccine,

Dr Rajan Choudhary, London UK

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Symptoms of Chronic Inflammation in the Body: Early Warning Signs Explained

Inflammation is a natural defense mechanism that helps the body fight infections and heal injuries. However, when inflammation persists for months or even years without a clear cause, it becomes chronic. Chronic inflammation can silently damage tissues and increase the risk of serious diseases.

In India, rising cases of lifestyle diseases such as diabetes, heart disease and autoimmune disorders are often linked to long-term inflammatory processes. Recognizing the symptoms of chronic inflammation in the body is essential for early prevention and treatment.

What Is Chronic Inflammation?

Acute inflammation is short-term and occurs in response to injury or infection. Chronic inflammation, on the other hand, is:

Persistent
Low-grade
Often symptomatically subtle
Linked to long-term health conditions

It may occur due to unhealthy lifestyle habits, stress, obesity or underlying disease.

Common Symptoms of Chronic Inflammation

1. Persistent Fatigue

Ongoing tiredness that does not improve with rest may indicate systemic inflammation.

Inflammatory chemicals in the body can interfere with energy production.

2. Joint and Muscle Pain

Unexplained pain, stiffness or swelling in joints may suggest inflammatory conditions such as arthritis.

Pain may:

Last for weeks
Worsen in the morning
Occur without injury

3. Digestive Issues

Chronic inflammation may affect the gut, leading to:

Bloating
Diarrhea or constipation
Abdominal discomfort
Food sensitivities

Gut health and immune function are closely connected.

4. Frequent Infections

A weakened immune response due to chronic inflammation may result in:

Recurrent colds
Slow wound healing
Persistent sore throat

5. Skin Problems

Inflammatory skin conditions include:

Acne
Eczema
Psoriasis
Rashes

Persistent skin issues may reflect internal inflammation.

6. Brain Fog and Mood Changes

Inflammation can affect brain function, causing:

Difficulty concentrating
Memory issues
Irritability
Low mood

Mental and physical health are interconnected.

7. Unexplained Weight Changes

Inflammation may disrupt metabolism, leading to:

Abdominal weight gain
Difficulty losing weight

Obesity itself can further promote inflammation.

Causes of Chronic Inflammation

Common contributing factors include:

Poor diet high in processed foods
Excess sugar intake
Smoking
Alcohol abuse
Chronic stress
Lack of exercise
Sleep deprivation
Environmental pollution

Addressing these factors is essential for prevention.

Diseases Linked to Chronic Inflammation

Long-term inflammation is associated with:

Type 2 diabetes
Cardiovascular disease
Cancer
Autoimmune disorders
Fatty liver disease
Alzheimer’s disease

Early intervention reduces risk significantly.

How to Reduce Chronic Inflammation Naturally

1. Adopt an Anti-Inflammatory Diet

Include:

Fresh fruits and vegetables
Whole grains
Nuts and seeds
Fatty fish
Olive oil

Avoid processed foods and excessive sugar.

2. Exercise Regularly

Moderate physical activity lowers inflammatory markers.

Aim for at least 30 minutes daily.

3. Manage Stress

Chronic stress increases inflammatory hormones.

Practice:

Meditation
Yoga
Deep breathing exercises

4. Improve Sleep

7–8 hours of quality sleep supports immune regulation.

5. Maintain Healthy Weight

Reducing excess body fat lowers inflammation levels.

6. Avoid Smoking and Limit Alcohol

Both habits promote inflammatory responses in the body.

When to Seek Medical Advice

Consult a healthcare professional if you experience:

Persistent fatigue
Joint swelling
Recurrent infections
Unexplained pain
Long-lasting digestive problems

Blood tests such as C-reactive protein (CRP) may help assess inflammation levels.

Chronic Inflammation in the Indian Context

Rapid urbanization, sedentary lifestyle and dietary shifts in India have contributed to increasing inflammatory-related diseases. Public awareness about preventive measures can significantly reduce healthcare burden.

Early lifestyle changes play a crucial role in improving long-term outcomes.

Conclusion

Chronic inflammation may present subtle symptoms such as fatigue, joint pain, digestive issues and brain fog. Although often overlooked, long-term inflammation can increase the risk of serious diseases.

Adopting healthy eating habits, regular exercise, stress management and adequate sleep can help reduce inflammation naturally. Recognizing early warning signs and seeking medical advice when needed ensures better long-term health.

Taking proactive steps today can prevent major complications tomorrow.

References

Indian Council of Medical Research – Chronic Disease Reports
World Health Organization – Non-Communicable Disease Guidelines
National Institute of Nutrition India – Dietary Recommendations
Lancet Global Health – Inflammation Research
Journal of Clinical Medicine – Chronic Inflammation Studies

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