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Published on: Apr 19, 2020
3 minute read
By: Dr Rajan Choudhary

What Is Herd Immunity With Respect To Covid19 ?

Herd immunity: the basics

Many countries have been in lockdown for over a month, and some have tried to begin the discussion of an exit strategy. We know that remaining in lockdown continuously is not a feasible strategy, as many people have been suffering economic consequences from the stringent lockdown measures, and many countries have been providing significant monetary and fiscal support for people and businesses at risk. But leaving lockdown too early has its own consequences.

Almost all public health professionals will agree that the lockdown has been able to significantly reduce infection rates and reduce the pressure on our healthcare systems. By taking this early victory and prematurely ending lockdown we risk another wave of infections, reintroducing lockdown, and having an overall negative effect on the general health of the populous.

So what can we do? One exit strategy that has been touted recently is herd immunity. To understand how to may work for COVID we must understand what epidemiologists mean by herd immunity.

IMMUNITY

Our body’s immune system fights against invading organisms such as bacteria and viruses. For a more in-depth discussion you can have a look at previous blogs on Vaccines and Boosting the Immune system. The immune system is very competent and has mechanisms to theoretically recognise any protein tags that do not belong to that person’s cells, even protein tags that do not currently exist in nature. This gives the immune system the ability to theoretically recognise nearly any invading organism that has existed or will ever exist.

The immune system goes beyond this as well and produces “memory cells”. These remain in the blood after an infection for a long time; in some cases, it can even be lifelong. When a second infection occurs from the same organism the immune system jumps into action and is able to produce antibodies against the invader almost immediately. This can neutralise the invader before it has a chance to replicate, cause severe symptoms and harm the body. Sometimes we never realise we have been infected as the infection never gets a chance to cause any damage.

Importantly, if the invader cannot replicate in our body, then its ability to spread to other people is also reduced. For example, respiratory viruses can rapidly replicate in our lungs and be transmitted when we cough or sneeze. By eliminating the virus before it can replicate extensively the number of viral particles in each cough and sneeze is reduced, reducing the chances of another person catching the infection.

This is the basis of how vaccines work and is covered in depth in the two part blog.

HERD IMMUNITY

If our immune system is so competent, why do we need to worry about infections at all? Surely we can all get infected and gain immunity. In an ideal world where everyone was healthy this may be true. But there are many people who do not have fully functioning immune systems. These people are immunocompromised and can be for many reasons.

Chemotherapy and radiotherapy for cancer destroys rapidly dividing cells such as cancer cells. Unfortunately, it also hits other dividing cells, such as hair follicles, gut lining and the bone marrow, which produce the white blood cells that give us immunity. Chemotherapy patients are very susceptible to even the mildest of infections. Even if a mild infection is suspected, they are treated aggressively with antibiotics, as their lowered immune systems can become overwhelmed very quickly.
Sometimes doctors advise patients to take medication that purposefully dampens the immune system. This is necessary for transplant patients, where the host immune system attacks the donor organ as it does not belong to the host, or in autoimmune disorders, where the immune system attacks the host by mistakenly recognising it as an “invader”.
Taking steroids long term has a similar effect, and is used quite commonly for skin disorders, asthma, COPD, and other inflammatory conditions.
People with various chronic illnesses can have reduced immunity as a result of the illness. High sugar levels associated with poorly controlled diabetes can cause worsening organ function, including the immune system. These patients are more susceptible to infections.
Finally, some people do not have fully functioning or welldeveloped immune systems for a variety of reasons, inherited or acquired. As we get older, the immune system function decreases, and simple infections can be devastating.

In all of these cases the ability to recognise invading organisms, destroy them and form immunity is hampered. Vaccination, one way of inducing immunity without causing the person to suffer from a full-blown infection, can also be ineffective in these patients, and some vaccines can be dangerous if used incorrectly. So how do we protect these vulnerable patients?

HERD IMMUNITY

This is where we go back to the earlier point. Immunity in healthy people can reduce or even prevent the spread of infection from one person to another. The number of healthy people outnumber the number of vulnerable, immunocompromised ones. Therefore, if we induce immunity in most people, the infection will simply not spread to the vulnerable ones. We don’t have to immunise everyone, just enough to prevent transmission. This is called herd immunity. This is why we immunise everyone with flu vaccines even those that are healthy and will survive a full blown infection. Because by preventing these people from inadvertently spreading the flu, they will protect those that we cannot immunise.

Does herd immunity work? For most other diseases, yes. It depends on how the disease is spread, and how infective it is. For measles, you need to immunise 19 out of 20 people to achieve herd immunity, because it is so infective. But once herd immunity was achieved death rates were drastically reduced. With the advent of anti-vaccine campaigns, particularly against MMR, this herd immunity has been lost, and many vulnerable children (and adults) who do not have fully functioning immune systems are now contracting this virus and dying from a preventable disease.

It can be achieved for pandemics as well. Norway was able to achieve partial herd immunity to H1N1 (swine flu) through a vaccination program and natural immunity. Vaccines are the best method for achieving herd immunity without extremely high death rates. We have already covered the issues with making a vaccine, and why it takes such a long time, in our previous blog

From reading this blog you should now have an understanding of what herd immunity is, and why it is important in protecting those that are vulnerable to infections. In our next blog we will look at why herd immunity may not be the solution for COVID-19.

Dr Rajan Choudhary, UK, Chief Product Officer, Second Medic Inc

www.secondmedic.com

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Digital Healthcare Automation India: Enabling Smart Workflows, Faster Care, and a Modern Clinical Ecosystem

Digital healthcare automation is redefining how India delivers medical services, manages clinical operations, and coordinates patient journeys. As hospitals, clinics, and digital health platforms move toward technology-driven processes, automation has become essential for ensuring efficiency, reducing manual work, minimizing delays, and improving care accuracy. In a healthcare system where patient volumes are high and specialist availability is uneven, automation empowers organizations to deliver faster, smarter, and more consistent care.

India’s healthcare automation growth aligns with national initiatives like ABDM (Ayushman Bharat Digital Mission), growing telemedicine adoption, rising digital literacy, and the increased use of AI-based medical tools. SecondMedic integrates automation into every stage of digital care-appointments, reporting, monitoring, follow-ups, and preventive health-allowing users and clinicians to experience a seamless, intelligent healthcare ecosystem.

Digital healthcare automation India is not simply about digitizing manual tasks; it is about augmenting healthcare with intelligent workflows that respond to real-time needs. By reducing repetitive workloads, automation allows clinicians to focus on what matters most: patient care.

Why Automation Matters in Indian Healthcare

India faces significant challenges: overloaded outpatient departments, resource shortages, manual data entry errors, delayed reports, and administrative inefficiencies. Automation addresses these issues by introducing structured, rule-based processes supported by AI and digital tools.

Key systemic challenges automation helps solve:

High patient-to-doctor ratios
Slow movement of information across departments
Inconsistent follow-up and monitoring
Manual errors in documentation and reporting
Unpredictable appointment flow
Inadequate time for patient–doctor interaction

Digital automation supports a more organized, reliable, and high-performance healthcare environment.

What Is Digital Healthcare Automation?

Digital healthcare automation refers to the use of AI, software systems, connected devices, and workflow engines to automate medical and administrative procedures. These tools reduce manual intervention wherever possible and ensure accuracy, repeatability, and continuity.

Core areas of automation include:

Appointment management and scheduling
Electronic medical record updates
Auto-generation of diagnostic summaries
Automated clinical reminders
Medication and health-plan notifications
Remote monitoring and alert systems
Digital report formatting
Workflow optimization for hospital operations

SecondMedic incorporates automation across its telemedicine, diagnostics, monitoring, and preventive-care systems.

Automated Appointment Scheduling and Coordination

Appointment automation is one of the most practical innovations in India’s digital health landscape. Without automation, patients often encounter long queues, missed follow-ups, and scheduling conflicts.

Automated scheduling helps by:

Matching patients to the right doctor
Reducing wait times
Preventing double bookings
Prioritizing urgent cases
Coordinating virtual and in-person consults
Helping doctors manage daily workloads efficiently

SecondMedic’s automated scheduling engine analyzes doctor availability, user urgency, and specialty requirements to optimize appointment flow.

Automation in Diagnostics and Reporting

Medical diagnostics often involve multiple steps that traditionally require human intervention-uploading reports, comparing past results, formatting summaries, highlighting abnormalities, and generating clear interpretations.

Automation enhances diagnostic workflows by:

Auto-organizing digital medical reports
Highlighting abnormal ranges
Identifying missing test values
Summarizing patient history for doctors
Formatting structured reports instantly
Automating comparisons with past results

For AI-based imaging and lab analytics, automation helps radiologists and clinicians detect patterns faster and reduce minor reporting inconsistencies.

Remote Monitoring and Automated Alerts

Remote patient monitoring has grown rapidly in India, especially for chronic diseases. Wearable devices and home-health tools generate continuous data streams. Automation helps turn these raw inputs into actionable insights.

Monitoring automation includes:

Auto-detection of abnormal vitals
Alerts for risky trends
Medication reminders
Follow-up triggers
Predictive alerts using AI
Aggregated health reports for doctors

For chronic care, this ensures timely intervention and reduces emergency visits.

Enhancing Hospital and Clinic Workflows

Healthcare automation in clinical facilities improves operational efficiency and reduces administrative bottlenecks. Hospitals benefit significantly from automated workflows that ensure consistency and speed.

Applications include:

Patient flow management
Automated admission and discharge processes
Digital billing and inventory management
Lab and pharmacy integration
Nursing task automation
Centralized communication dashboards

These improvements reduce patient wait times and improve overall care delivery.

Improving Patient Engagement Through Automation

Automation supports patients by making healthcare more accessible and predictable. Many individuals struggle to remember follow-ups or understand complex medical guidance. Automated systems simplify this journey.

Key patient-facing automation benefits include:

Reminders for medications and appointments
Preventive health notifications
Personalized care tips
AI-driven chat support for common queries
Post-consultation guidance delivery
Automated sharing of doctor notes and reports

SecondMedic uses automation to ensure patients remain engaged throughout their health journey.

Automation and AI: A Powerful Combination

AI enhances healthcare automation by making it adaptive and context-aware. Instead of following fixed rules, AI learns from patterns, outcomes, and user behavior to optimize workflows.

AI strengthens automation through:

Predictive recommendations
Dynamic scheduling adjustments
Automated report summaries
Early detection of errors
Smart escalation of high-risk cases

This combination powers advanced clinical systems that support both providers and patients.

Challenges in Implementing Healthcare Automation in India

Automation requires planning, infrastructure, and careful integration. Key challenges include:

Fragmented patient data across facilities
Infrastructure limitations in rural areas
Varying digital readiness across hospitals
Need for staff training
Ensuring compliance with DPDP and ABDM standards

Despite these challenges, adoption is increasing as digital health becomes mainstream.

The Future of Digital Healthcare Automation in India

India is poised for significant automation growth, driven by advancements in AI, 5G connectivity, cloud platforms, and interoperable health records. Over the next decade, digital healthcare automation will include:

AI-powered hospital command centers
Fully automated radiology and pathology workflows
Robotic process automation (RPA) in administrative processes
Automated care coordination for chronic diseases
Voice-based digital assistants for patient queries
Smart triage algorithms integrated across telemedicine networks
Predictive automation for emergency care

SecondMedic is building a modern digital ecosystem that integrates AI, automation, and predictive healthcare tools, creating a seamless and intelligent healthcare experience for users.

Conclusion

Digital healthcare automation India is unlocking a new era of efficiency, precision, and patient-centered care. By automating clinical workflows, diagnostic tasks, and patient engagement processes, healthcare organizations can deliver faster, more reliable services. Automation supports doctors with real-time insights, reduces administrative burdens, and ensures that patients receive timely interventions.

SecondMedic continues to lead this transformation by integrating automation into virtual care, diagnostics, monitoring, and preventive health solutions, shaping the future of digital healthcare in India.

To access advanced automated digital healthcare tools, visit www.secondmedic.com

References

NITI Aayog – Digital Health India
ABDM – National Digital Health Mission
IMARC – Healthcare Automation Market India
WHO – Digital Health Workflow Automation
FICCI – Hospital Automation India

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