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Published on: Apr 20, 2020
3 minute read
By: Dr Rajan Choudhary

Is Herd Immunity A Valid Strategy For COVID 19?

Yesterday we explained you what Herd Immunity means and how it works, today we will take the discussion further to determine whether it is effective and can be recommended in the current context.

COVID-19 currently does not have a cure or a vaccine. Lockdown is the only strategy that appears to be working. Could implementing policies that encourages herd immunity be used to accelerate immunity in the population without the need for a vaccine?

INFECTIVITY

For the strategy to work we need to know a few things about the virus. How infective is it? In one of our earliest blogs we discussed infectivity at length and determined that the R0 (infectivity) may be between 2 and 3. This means each person with the virus can infect around 2-3 people at a time. Whilst this is not as high as Mumps (10-12) it is much higher than the common flu. The higher the R0 the more people that need to be immunised before herd immunity is achieved. For COVID it is estimated that 70% of the population need to be infected.

This is based off our current testing. Due to shortages in testing kits, only testing those that have a high likelihood of being infected and poorly organised testing infrastructure in some countries, we are likely underestimating. The number of people infected may be much higher as we are missing those that are asymptomatic but still have the disease and are still passing the disease on.

MORTALITY

Secondly, we need to know the mortality from COVID-19. Early estimates of mortality were as high as 10%, as we had little data on how many people were truly infected, but as the number of infected cases rose, and testing amongst the infected and symptomatic population rose, a more accurate mortality has been found to be around 1%. There is a risk we may still be underestimating the true mortality, as some cities have noted a spike in cardiac deaths, and some evidence supports possible cardiac damage due to COVID. But from the data we have, we know its mortality is lower than MERS (34%) and SARS (10%) but more than influenza (0.1%).

estimates of the COVID-19 case fatality rate

Whilst we have some data on who is likely to suffer from severe COVID symptoms (elderly, immunocompromised, people with heart or lung problems) we still cannot accurately determine who will get severe COVID in the “low risk” population. Simply because someone is young and healthy does not mean they will not die from COVID.

LENGTH OF IMMUNITY

Third we need to know how long this immunity will last. Similar coronaviruses responsible for the common cold usually create immunity that lasts for a few months, which is why we often get the cold repeatedly. A virus is also very prone to mutations that can change the structure and functions of its proteins, proteins responsible for tagging, latching on to and entering cells. If the structure of these proteins changes enough, then our antibodies will not be able to bind on, and new types of antibodies will have to be made with a slightly different structure. This effectively means our bodies have to start from step 1 again to create immunity, and we have to make new vaccines. This mutation rate is why we have to make new vaccines every season for the flu.

LONG TERM COMPLICATIONS

Finally, we need to know if there are any long-term implications from a viral infection. Again, this is something we do not know yet, as the virus has only been around for a few months. There may be implications for the cardiovascular system, long term breathing problems or more. And even if the complication rate appears relatively low (say, 1%), if millions of people are allowed to get infected, by definitions thousands or tens of thousands of people will have these complications, complications that can lead to issues later in life or an early death.

CONCLUSION

So, is herd immunity a viable strategy for COVID? Without a safe vaccine the general consensus appears to be no.

We don’t know how infective the virus really is or how many people it has infected

A 1% death rate is still very high. This means for every 100 people to be infected; one will die. This would mean hundreds of thousands of people dead in a country with a population over 10 million. It is unacceptably high.

If the death rate is 1%, then hospitalisation rate is likely higher. Almost all countries do not have capacity to have 1% of the population in hospital. Overwhelming the healthcare system will lead to poorer care, and worse care for those who do not have COVID. Leading to more people coming to serious harm or dying as a result of poor healthcare, not because of COVID.

We don’t know the long-term effects of COVID. By purposefully infecting people instead of waiting for a vaccine we may be causing unnecessary damage to a person’s health that only becomes apparent later in life. But this is speculation as we do not currently know if COVID has long term effects,

We don’t know if all of the risks above will amount to anything. The immunity may not last long enough, leading to another spike in infections and mortality.

Mass vaccination appears to be the safest strategy. And though human clinical trials have started on a number of vaccines, we are still months away from deployment. Until then we should not come out of lockdown prematurely, not until we have received an unbiased assessment from public health officials that states it is safe.

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Best Treatment Options for IBS in India

Irritable Bowel Syndrome (IBS) is a common digestive condition that affects millions of people across India. If you often suffer from stomach pain, bloating, constipation, or diarrhea, you may be dealing with IBS. While it can be frustrating and affect your daily life, the good news is that IBS can be managed effectively with the right approach.

In this blog, we will cover the best treatment options for IBS in India, from diet changes to ayurvedic solutions and advanced diagnostic tests.

What is IBS?

IBS (Irritable Bowel Syndrome) is a chronic digestive disorder that affects how your gut functions. Unlike other diseases, IBS doesn’t damage the digestive tract, but it causes uncomfortable symptoms that come and go.

Causes of IBS

The exact cause of IBS is not fully understood, but common factors include:

Gut-brain axis dysfunction
Stress and anxiety
Hormonal changes
Food intolerances (e.g., lactose, gluten)
Gut infections
Poor dietary habits

Common Symptoms of IBS

Abdominal pain or cramps
Gas and bloating
Diarrhea, constipation, or both
Changes in bowel movements
Mucus in the stool
Fatigue or sleep problems

Symptoms vary for each person and often get worse after eating or during times of stress.

Best Treatment Options for IBS in India

IBS treatment focuses on relieving symptoms, as there is no one-size-fits-all cure. Here are the top treatment approaches used across India:

1. Dietary Changes

One of the most effective ways to manage IBS is through food:

Follow the Low FODMAP Diet

FODMAPs are carbohydrates that are hard to digest and cause gas. The Low FODMAP diet helps reduce symptoms by eliminating:

Onions, garlic
Beans, lentils
Dairy
Wheat
Processed foods

Slowly reintroduce foods with the help of a nutritionist.

Eat Small, Frequent Meals

Instead of large meals, eat smaller portions 4–5 times a day.

Stay Hydrated

Drink 8–10 glasses of water daily to ease digestion and prevent constipation.

2. Probiotics and Supplements

Probiotics are good bacteria that help restore balance in your gut.

Brands like Darolac, Sporlac, VSL#3 are commonly used in India.
Fiber supplements (like Isabgol) help relieve constipation.
Peppermint oil capsules may soothe gut muscles.

Always consult your doctor before starting supplements.

3. Prescription Medications

Depending on the symptoms, doctors in India may prescribe:

Antispasmodics (e.g., Drotaverine, Mebeverine) – for cramps
Laxatives (e.g., Lactulose) – for constipation
Anti-diarrheal drugs (e.g., Loperamide) – for diarrhea
Tricyclic antidepressants – to reduce gut sensitivity

Medication should be used only under medical supervision.

4. Ayurvedic Treatment for IBS

India offers powerful traditional options through Ayurveda. Herbs used include:

Kutaj – for diarrhea
Bilva – for digestion
Triphala – for bowel regularity
Jeeraka and Musta – reduce bloating

Ayurvedic treatment focuses on balancing the vata, pitta, and kapha doshas. Always choose certified practitioners.

5. Stress Management Techniques

Since stress and anxiety worsen IBS, it’s important to care for your mental health:

Yoga – especially poses like Pawanmuktasana and Vajrasana
Meditation and Pranayama
Cognitive Behavioral Therapy (CBT)
Counseling for teenagers or working professionals under pressure

Mind-body techniques are especially useful in Indian urban settings.

Recommended Lab Tests (Available on SecondMedic with Thyrocare)

To rule out other conditions and get clarity on your gut health, the following tests are helpful:

Thyroid Profile (T3, T4, TSH) – to rule out hypothyroidism
Vitamin D & B12 Tests – deficiencies can mimic IBS
Liver and Kidney Function Tests – rule out other digestive diseases
Stool Occult Blood Test / Calprotectin – if symptoms persist
Aarogyam C Panel by Thyrocare – a full metabolic and vitamin panel

These tests are available at affordable rates with home sample collection via SecondMedic.

When to See a Doctor

Consult a gastroenterologist if:

Your symptoms last more than 4 weeks
You see blood in stool
You have rapid weight loss
You're losing sleep due to stomach pain

Early diagnosis prevents long-term damage and reduces emotional distress.

IBS Products Commonly Found in India

Isabgol (Psyllium husk) – for fiber
Probiotic sachets – Darolac, Vizylac
Ayurvedic syrups – Baidyanath Abhayarishta, Himalaya Triphala
Peppermint capsules – natural antispasmodic
Stress-relief teas – chamomile, tulsi

Conclusion

IBS can feel overwhelming, but with the right approach, it is very manageable. From diet changes and probiotics to Ayurveda and stress relief, you have many tools to regain control.

India offers a unique blend of modern and traditional therapies. Whether you're in a metro city or a small town, access to affordable tests and holistic treatments is improving every day.

If you’re struggling with IBS symptoms, talk to a doctor, get tested, and explore a personalized treatment plan. You don’t have to live in discomfort.

Explore the best treatment options for IBS in India and take the first step toward a healthier gut today.

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