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Published on: Jul 09, 2020
2 minute read
By: Dr Rakesh Choudhary

COVID- 19 Tests – What Do You Need To Know?

COVID- 19 tests – What do you need to know?

Author: Dr. Rakesh Choudhary MBBS, MS, FRCS UK, FRCS Orth UK, MChOrth UK.

Dr. Choudhary is a practicing consultant surgeon in the UK.

So many of us think it is not their job to learn about COVID-19 tests and this should be left for the experts and governments to decide about these tests. But I strongly suggest the public must have a basic understanding of these tests which they may have to have themselves.

Basically there are two types of tests, one which can detect the virus in the body and the other one which tells if the person had the previous infection.

Virus test

The virus test detects an active infection. It detects the genetic material (RNA) of the virus during an active infection. It is also called a PCR (polymerase chain reaction) test or nucleic acid test and is sometimes inaccurately called an antigen test.

A swab is taken from deep in the back of your throat and deep in the nose. The swab should go deep up to 7-8 cm and is generally uncomfortable for the patient. Swabbing patients using the correct technique is paramount in ensuring an accurate result. By simply swabbing the inside of the nasal passage is not deep enough to verify that the virus is present.

What does virus testing tell you?

This test tells us if a patient is actively infected with the COVID-19 virus. Virus testing is used mainly for the diagnosis of COVID-19.

When should it be done?

The virus test works best during the first seven days of symptoms.

The coronavirus can be detected in swabs even before symptoms of illness first appear . This is why people can be infectious for a few days before the onset of symptoms, which usually appear about 5 days after the virus infects. Some people have no symptoms throughout their infection but are positive on the virus test and infectious to others. After a few days of illness, the concentration of the virus falls (as seen in swab samples) and the symptoms of the illness usually recede.

Accuracy of the test

In a person with COVID-19, the test is less likely to give a positive result late in the course of infection once the virus has been cleared by the immune system, or if an inadequate sample is taken from the nose or throat. There are concerns that the rate of ‘false negative’ test results could be as high as 30% and a significant number of people are wrongly being told they do not have the virus.

Antibody test

Antibody tests check your blood by looking for antibodies, which may tell you if you had a past infection with the virus that causes COVID-19. Antibodies are protein structures that are produced by the immune system in response to certain infections. The antibody can help fight off infections and can provide protection against getting that disease again (immunity). Antibodies are disease-specific. For example, measles antibodies will protect you from getting measles if you are exposed to it.

The antibody test detects the presence of antibodies as a marker of past infection. The antibody test (blood test) will only detect infections after the immune system has produced antibodies that recognize the virus. This happens approximately 7–10 days after symptoms develop.

Tests carried out a week after a patient develops symptoms will detect only 30% of people who had COVID-19 infection. Accuracy increases to 72% at two weeks and to 94% in the third week. Some people may take even longer to develop antibodies, and some people who are infected may not ever develop antibodies.

Interpretation of the antibody test is complex for non-medical people. Basically having antibodies to the virus that causes COVID-19 may provide protection from getting infected with the virus again. If it does, we do not know how much protection the antibodies may provide or how long this protection may last.

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Walking Meetings via Voice Chat: A Smarter Way to Boost Health and Productivity in Remote Teams

Remote work has transformed how teams collaborate, but it has also increased sedentary behaviour. Long hours of sitting in front of screens contribute to fatigue, musculoskeletal pain and reduced mental focus. In this context, walking meetings conducted via voice chat have emerged as a simple yet effective corporate wellness practice that aligns productivity with health.

Walking meetings do not require additional time, special equipment or complex planning. They simply reimagine how meetings are conducted.

The Sedentary Challenge in Remote Work

According to WHO and ICMR data:

prolonged sitting increases the risk of heart disease, diabetes and musculoskeletal problems
remote employees often sit longer than office-based workers
screen fatigue negatively affects mental health and productivity

Traditional video meetings unintentionally reinforce inactivity.

What Are Walking Meetings?

Walking meetings are conversations held while participants walk instead of sitting.

In remote settings, these meetings:

are conducted via voice calls
eliminate the need for video screens
allow participants to move freely

They are ideal for one-on-one discussions, team check-ins and brainstorming sessions.

Why Voice Chat Works Best for Walking Meetings

Voice-only meetings:

reduce screen dependency
allow safer movement
encourage active listening

Without visual distractions, participants often engage more deeply in conversation.

Health Benefits of Walking Meetings

Reduced Sedentary Time

Even short walks help:

improve blood circulation
reduce stiffness
activate muscles

WHO recommends breaking prolonged sitting every 30–60 minutes.

Cardiovascular Support

Regular walking:

improves heart health
lowers blood pressure
supports metabolic health

Incorporating movement into meetings contributes to daily activity goals.

Musculoskeletal Relief

Walking reduces:

neck and back strain
shoulder tension
joint stiffness

This is particularly valuable for desk-bound employees.

Mental Health and Cognitive Benefits

Improved Focus and Creativity

Movement increases blood flow to the brain.

Studies cited by Lancet show that walking enhances:

problem-solving
creativity
memory recall

Many people report clearer thinking during walking discussions.

Stress Reduction

Walking helps:

lower cortisol levels
improve mood
reduce mental fatigue

This supports emotional wellbeing in high-pressure work environments.

Productivity Benefits for Organisations

Walking meetings:

reduce meeting fatigue
improve engagement
shorten meeting duration due to focused discussion

Employees often return to tasks feeling refreshed rather than drained.

Cultural Shift Toward Wellness-Oriented Work

Encouraging walking meetings signals:

trust in employees
commitment to wellbeing
flexibility in work culture

This improves morale and retention.

How to Implement Walking Meetings in Remote Teams

Simple steps include:

designating certain meetings as “audio-only”
encouraging participants to walk indoors or outdoors
keeping meetings concise
sharing agendas in advance

Clear guidelines ensure safety and effectiveness.

Safety and Practical Considerations

Best practices include:

avoiding walking in unsafe or crowded areas
using earphones for clarity
walking at a comfortable pace
pausing movement when taking notes

Inclusivity is important—walking should be optional, not mandatory.

Who Benefits Most from Walking Meetings?

Walking meetings are especially helpful for:

remote workers
hybrid teams
roles with frequent discussions
employees experiencing screen fatigue

They are less suitable for data-heavy presentations.

Walking Meetings as Part of Corporate Wellness Programs

Walking meetings complement:

ergonomics initiatives
mental health programs
physical activity challenges

They integrate wellness into daily workflows rather than adding extra tasks.

Long-Term Impact on Workplace Health

Over time, organisations adopting movement-friendly practices observe:

reduced burnout
improved energy levels
healthier work routines

Preventive health strategies are most effective when embedded into daily habits.

Role of Preventive Healthcare Awareness

NITI Aayog and WHO emphasise lifestyle modification as a core preventive health strategy.

Walking meetings align perfectly with this approach by:

reducing inactivity
promoting movement
supporting mental wellbeing

Small changes deliver cumulative benefits.

Conclusion

Walking meetings conducted via voice chat are a practical, low-cost and highly effective way to improve employee health and productivity in remote teams. By replacing sedentary meetings with movement-based conversations, organisations can reduce screen fatigue, enhance focus and support long-term wellbeing. In a remote-first world, walking meetings represent a smarter way to work—where productivity and health move forward together.

References

World Health Organization (WHO) – Physical Activity and Sedentary Behaviour Guidelines
Indian Council of Medical Research (ICMR) – Lifestyle and Non-Communicable Disease Reports
Lancet – Physical Activity, Cognition and Workplace Health Studies

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