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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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Monthly Field Day with Patients & Staff: Building Trust, Engagement, and Wellbeing

Healthcare is built on relationships. While diagnosis, treatment and technology are critical, the human connection between patients and healthcare staff remains central to healing and recovery. A Monthly Field Day with Patients & Staff is a thoughtful initiative designed to strengthen these relationships by creating opportunities for interaction outside routine clinical environments.

In today’s healthcare systems, patient engagement and staff wellbeing are recognised as essential components of quality care. Monthly field days provide a structured yet informal platform to support both.

What Is a Monthly Field Day with Patients & Staff?

A Monthly Field Day is a planned engagement event where patients and healthcare staff come together to participate in non-clinical activities. These events focus on:

interaction
wellbeing
communication
community-building

They are not medical appointments but shared experiences that promote trust and understanding.

Why Field Days Matter in Healthcare

Healthcare Is Emotionally Demanding

Patients often experience anxiety, fear and uncertainty. Staff face long hours, emotional stress and high responsibility. Field days offer a space for:

relaxed interaction
emotional connection
mutual understanding

This humanises care delivery.

Strengthening Patient–Staff Trust

Trust grows through:

open communication
shared experiences
consistent engagement

Field days reduce perceived barriers between patients and healthcare teams.

Benefits for Patients

Improved Comfort and Confidence

Patients feel more at ease when they know the people involved in their care beyond clinical roles.

Better Engagement in Care

Engaged patients are more likely to:

ask questions
follow care plans
attend follow-ups

This leads to improved health outcomes.

Emotional and Social Wellbeing

Social interaction, light activity and positive experiences support mental and emotional health, especially for patients with chronic conditions.

Benefits for Healthcare Staff

Reduced Burnout

Regular non-clinical engagement helps:

reduce emotional fatigue
restore motivation
improve job satisfaction

Stronger Team Relationships

Shared activities strengthen teamwork and communication among staff members.

Renewed Sense of Purpose

Seeing patients outside stressful clinical settings reinforces the meaningful impact of healthcare work.

Organisational Benefits

Enhanced Patient-Centered Culture

Field days reinforce values of empathy, accessibility and respect.

Improved Patient Satisfaction

Trust and familiarity contribute to better patient experiences and feedback.

Better Communication and Feedback

Informal settings encourage honest dialogue, helping organisations understand patient needs and expectations.

Activities Commonly Included in Field Days

Wellness Activities

gentle exercises
stretching or yoga
breathing sessions

Educational Interactions

health awareness talks
preventive care discussions
lifestyle guidance

Recreational and Social Activities

group games
creative sessions
interactive challenges

These activities promote joy, connection and inclusion.

Inclusivity and Accessibility

Effective field days are:

inclusive of different age groups
adaptable for physical limitations
culturally sensitive
welcoming and non-competitive

Inclusivity ensures meaningful participation for all.

Why Monthly Frequency Works Best

Monthly scheduling:

maintains continuity
builds long-term trust
prevents disengagement
supports gradual relationship building

Consistency transforms engagement into culture.

Evidence Supporting Engagement Initiatives

Research shows that:

patient engagement improves health outcomes
staff wellbeing reduces errors and burnout
relationship-based care enhances satisfaction

Global health frameworks emphasise people-centred care models.

Measuring the Impact of Field Days

Impact can be evaluated through:

patient feedback
staff engagement surveys
participation rates
qualitative testimonials

Regular assessment helps refine the program.

Implementing a Successful Monthly Field Day

Key elements include:

leadership support
clear objectives
simple, inclusive activities
consistent scheduling
feedback-driven improvement

Success depends on commitment rather than scale.

Long-Term Impact on Healthcare Culture

Over time, Monthly Field Days contribute to:

stronger trust
improved communication
better morale
enhanced care experience

They reinforce the idea that healthcare is a partnership between people.

Conclusion

A Monthly Field Day with Patients & Staff is more than an engagement activity—it is a meaningful investment in trust, wellbeing and human connection. By creating shared experiences beyond clinical settings, healthcare organisations strengthen relationships that directly influence care quality and satisfaction. In an environment often driven by efficiency and outcomes, monthly field days remind us that compassion, communication and community remain at the heart of effective healthcare.

References

World Health Organization (WHO) – People-Centred Care and Patient Engagement
Indian Council of Medical Research (ICMR) – Patient Experience and Care Quality Studie
Lancet – Patient–Provider Relationships and Health Outcomes
National Health Systems Resource Centre – Community Engagement in Healthcare
Indian Journal of Healthcare Management – Staff Wellbeing and Patient Satisfaction
Statista – Healthcare Engagement and Experience Trends

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