Can you get COVID-19 infection just by “Talking” to an infected person for a few minutes?

Yes, you can.

You don’t need to be exposed to an infected person who is coughing, sneezing and spluttering to get the infection.

Merely talking to an infected person can make you catch the coronavirus infection particularly if you are very close to the person with infection and not wearing a mask in an indoor setting with poor ventilation.

Remember, Even Vaccines don’t have 100% protection.

Remember to maintain Space and Wear a Face Mask

References

Guardian. Talking can spread Covid as much as coughing, says research.
Tiny aerosols of the virus emitted when speaking linger in air for longer than larger droplets from a cough.
Nicola Davis Science correspondent
@NicolaKSDavis
Wed 20 Jan 2021 00.01 GMT

Journal Proceedings of the Royal Society A. Evolution of spray and aerosol from respiratory releases: theoretical estimates for insight on viral transmission. P. M. de Oliveira , L. C. C. Mesquita , S. Gkantonas , A. Giusti and E. Mastorakos. Published:20 January 2021. https://doi.org/10.1098/rspa.2020.0584

Guardian. Single Covid vaccine dose in Israel ‘less effective than we thought’.
Peter Beaumont
Tue 19 Jan 2021 16.53 GMT

Telegraph: UK to ‘look carefully’ at claims vaccine efficacy in Israel has dropped to 33 per cent with one dose.
Israel’s vaccine tsar says single Pfizer dose appears ‘less effective than we had thought’ as scientists demand evidence is published
By
Sarah Knapton,
SCIENCE EDITOR
20 January 2021 • 1:46pm

Daily Mail: Israel is STILL waiting for its world-beating vaccination drive to kick in as cases and hospitalisations soar higher than ever despite vaccine stopping 50% of new Covid infections. By Chris Jewers For Mailonline11:20, 14 Jan 2021 , updated 18:04, 14 Jan 2021

Disclaimer: Please note- This blog is NOT medical advice. This blog is NOT a expert medical opinion on various topics. This blog is purely for information only and do check the the sources where cited. Please DO consult your own doctor to discuss concerns and options relevant to you.

The views expressed in this blog represent the author’s views held at the time of drafting the blog and may change overtime, particularly when new evidence comes to light. The blog is not necessarily endorsed by any organisation the author is associated with and the authors views are not in way intended to be a substitute for professional advice.

Is this the beginning of the end for COVID-19 ?

The superstitious might say “don’t jinx it by calling the end early”……..

So the answer is “may be”.

The good news from two Vaccine trials indicates that this might be “beginning of the end” for COVID-19.

Two recent press reports give rise to lot of optimism to the population that is getting weary with the lockdown. It is good to have a ray of hope among all the doom and gloom.

The covid-19 vaccine (mRNA-1273) from US biotech company Moderna was found to be 94.5% effective.

Another mRNA vaccine developed by Pfizer and BioNTech was reported to be 90% effective.

Now the caveats…. these are interim trial results and the trial results have not been subject to scrutiny by the wider scientific community as the full results are yet to be published.

Clinical Trials usually recruit motivated people without too many other medical problems. So one has to hope that these interim trial results can be replicated in the wider elderly population with lot of medical problems.

Update: Now a third Vaccine, the “Oxford Vaccine” has been found to be 90% effective when given as “a half and then full” schedule.

Update: summary so far at BMJ website.

Let’s hope that all the vaccines are very safe and highly effective when used in the real world population.

References: (1). Covid-19: Vaccine candidate may be more than 90% effective, interim results indicate. BMJ 2020; 371 doi: https://doi.org/10.1136/bmj.m4347 (Published 09 November 2020). Cite this as: BMJ 2020;371:m4347.

(2). Covid-19: Moderna vaccine is nearly 95% effective, trial involving high risk and elderly people shows. BMJ 2020; 371 doi: https://doi.org/10.1136/bmj.m4471 (Published 17 November 2020). Cite this as: BMJ 2020;371:m4471

(3). Covid-19: Oxford vaccine is up to 90% effective, interim analysis indicates
BMJ 2020; 371 doi: https://doi.org/10.1136/bmj.m4564 (Published 23 November 2020)
Cite this as: BMJ 2020;371:m4564

Covid-19: What do we know about the late stage vaccine candidates?. BMJ 2020; 371 doi: https://doi.org/10.1136/bmj.m4576 (Published 24 November 2020)
Cite this as: BMJ 2020;371:m4576

Disclaimer: Please note- This blog is NOT medical advice. This blog is purely for information only and do check the the sources where cited. Please consult your own doctor to discuss concerns and options relevant to you. The views expressed in this blog represent the author’s views held at the time of drafting the blog and is likely to change overtime, particularly when new evidence comes to light. The blog is not necessarily endorsed by any organisation the author is associated with and views are not substitute for professional advice.

How long can Coronavirus Virus Survive on doors, handles, furniture and fittings?

Coronavirus was previously known to survive for about 3 days at room temperatures. (On certain surfaces made of plastic and stainless steel).

Now an Australian team has found that Coronavirus can survive upto 28 days in Cold conditions. The results need to be interpreted with great caution as it tested virus under unusual artificial conditions and hence might not be relevant for real life situations

On the other hand , if the study is right, then it might indicate that the Pandemic can get worse during cold Winter before it gets better in Spring and Summer.

What can we do? In addition to Social distancing measures and Mask wearing, Frequent hand washing would stop the Virus from Spreading.

Every Week , we are learning more about the Virus. Let’s hope it comes to an end soon.

1. BBC news: Covid-19 virus ‘survives on some surfaces for 28 days’. https://www.bbc.co.uk/news/health-54500673

2. Daily Mail. https://www.dailymail.co.uk/news/article-8828459/Coronavirus-survive-MONTH-surfaces-including-banknotes-mobile-phone-screens.html

3. Aerosol and Surface Stability of SARS-CoV-2 as Compared with SARS-CoV-1
April 16, 2020
N Engl J Med 2020; 382:1564-1567
DOI: 10.1056/NEJMc2004973

Disclaimer: Please note- This blog is NOT medical advice. This blog is purely for information only and do check the the sources where cited. Please consult your own doctor to discuss concerns and options relevant to you.

The views expressed in this blog represent the author’s views held at the time of drafting the blog and is likely to change overtime, particularly when new evidence comes to light. The blog is not necessarily endorsed by any organisation the author is associated with and views are not substitute for professional advice.

Which is better for COVID-19 protection : face masks or face shields.

Various type of masks are used by public for protection against COVID-19.

Some wear cloth masks. Some use medical disposable masks. Some wear face shields particularly those working in shops.

Are they all the same?.

No

Recent evidence indicates that standard light-blue disposable surgical masks are the most effective at containing the Cornovirus.

Face shields were found to be failing when compared with standard ( triple layer) medical grade masks.

References

1. Face shields ineffective at trapping aerosols, says Japanese supercomputer. Guardian Newspaper. Justin McCurry in Tokyo. Tue 22 Sep 2020 07.19 BST. https://www.theguardian.com/world/2020/sep/22/face-shields-ineffective-trapping-aerosols-japanese-supercomputer-coronavirus

2. Do cloth masks work? Supercomputer Fugaku says yes.World’s fastest computer calculates that nonwoven fabric is best. YUKI MISUMI, Nikkei staff writer. August 25, 2020 00:34 JST. https://asia.nikkei.com/Business/Technology/Do-cloth-masks-work-Supercomputer-Fugaku-says-yes

3. Visualizing droplet dispersal for face shields and masks with exhalation valves. Physics of Fluids 32, 091701 (2020); https://doi.org/10.1063/5.0022968

4. Visualizing the effectiveness of face masks in obstructing respiratory jets. Siddhartha Verma, Manhar Dhanak, and John Frankenfield. https://aip.scitation.org/doi/10.1063/5.0022968
Phys Fluids (1994). 2020.

Disclaimer: Please note- This blog is NOT medical advice. This blog is purely for information only and do check the the sources where cited. Please consult your own doctor to discuss concerns and options relevant to you.

The views expressed in this blog represent the author’s views held at the time of drafting the blog and is likely to change overtime, particularly when new evidence comes to light. The blog is not necessarily endorsed by any organisation the author is associated with and views are not substitute for professional advice.

COVID-19 risk assessment of NHS members : is it an opportunity missed?

The National Health Service had recently embarked on a Risk assessment exercise of its staff to assess the Vulnerability of individual members to Coronavirus infection ( COVID-19).

The exercise is being done with good intentions. Given the unprecedented situation of the pandemic and lack of concrete data , the exercise seemed to have steered away from firm “one size fits all” type of recommendations.

Given the uncertainties with the currently available data on various forms of protection ( from simple surgical masks to shielding) , the exercise could have been a starting point for an nationwide intervention study .

An opportunity seems to have been missed and if there is a second wave, NHS might regret not learning from the first wave.

Please do add your opinion at the rapid response section of the BMJ.

References

1. Covid-19 risk assessment in BAME staff

Covid-19 risk assessment: a futile metaphorical strip search

BMJ 2020; 370 doi: https://doi.org/10.1136/bmj.m3251 (Published 26 August 2020)

Cite this as: BMJ 2020;370:m3251

2. Physical distancing interventions and incidence of coronavirus disease 2019: natural experiment in 149 countries

BMJ 2020; 370 doi: https://doi.org/10.1136/bmj.m2743 (Published 15 July 2020)

Cite this as: BMJ 2020;370:m2743

3. Complete protection from covid-19 is possible for health workers

BMJ 2020; 370 doi: https://doi.org/10.1136/bmj.m2641 (Published 07 July 2020)

Cite this as: BMJ 2020;370:m2641

4. Two metres or one: what is the evidence for physical distancing in covid-19?

BMJ 2020; 370 doi: https://doi.org/10.1136/bmj.m3223 (Published 25 August 2020)

Cite this as: BMJ 2020;370:m3223