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New tools help people determine the best way to protect themselves and others from COVID-19

Transmission electron micrographs of SARS-CoV-2 virus particles (UK B.1.1.7 variant) isolated from patient samples and cultured in cell culture. Credit: NIAID

New interactive graphics developed and published by British researchers BMJ Today it helps people decide what to do in their everyday situations to protect themselves and others from COVID-19.

Based on estimates provided by 26 international experts, it indicates different routes that may be taken by the virus that causes COVID-19 when traveling between the two.

It is designed to help explain the risk of getting COVID-19 in different scenarios and what can be done to mitigate those risks, based on the available evidence.

Uncertainty exists among experts not only in the field of scientific consensus, but also on how the virus behaves, how it is transmitted, and how to minimize the possibility of transmission through personal and social means. I also tell you the disagreement.

Researchers say the tool needs to be supported The person who makes the decision The general public to make informed decisions about how to reduce Virus infection In a variety of situations, such as how to make your workplace or public area as safe as possible while being open and functional.

To create the tool, researchers consulted with 26 experts from different disciplines and countries, asking for all the value needed to support graphics.

These include various viral transmission routes (eg, large and small airborne droplets, contact with contaminated surfaces) during different activities (conversations, coughing, exercise, eating, etc.) in different environments (outdoors, indoors, etc.). ) Was included. Room of size with or without ventilation).

They also collected estimates on the importance of various safeguards (eg). Face cover And screen, physical distance, Hand hygiene, Surface cleaning) Reduce the transmittance.

Analysis of all values ​​showed that aerial transmission routes were the most important in almost all situations, and facial covers were the most important mitigation, especially when worn by infected individuals as a means of controlling the source of infection.

But importantly, all routes were considered involved in the transmission, and simple measures such as physical distance, hand washing, and respiratory hygiene all made a beneficial contribution.

Researchers have found important evidence gaps and disagreements among experts on several variables, including the role of aerosol infection. The effect of different types of masks on inhaled aerosols. The effect of face covering on movement from hands to eyes, nose and mouth.

“Everyone wants to know how different each possible action we have discussed makes a difference. And finally, gathering enough knowledge from experts in different disciplines around the world, they I was able to answer the question, “explains Cambridge University author Alexandra Freeman.

She adds: “This tool is interactive, so whether you’re singing in a choir or wanting to know about the risks of eating in a small restaurant, you can explore the scenarios that are most relevant to you. How much difference does the window make? Can you do that by opening it or cleaning the surface? Take a look. “

Harry Rutter, co-author of the University of Bath, said: It is clear that all outbound routes are important in different situations and in different proportions. The fact that one of these routes, airborne transmission, is the primary route in most situations does not mean that the other routes can be ignored. “

The authors acknowledge the limitations of some studies and state that they produce solid evidence for the complex and highly accidental pathways of the COVID-19 virus. transmission It’s not easy. But they say their approach “will prove useful in the future to those who are facing the challenge of delivering complex, inaccurate, and uncertain evidence.”


Aerosol infections can spread COVID-19


For more information:
Visualization of SARS-CoV-2 transmission routes and mitigation measures, BMJ (2021). bmjopen.bmj.com/lookup/doi/10. … / Bmjopen-2021-050869

Quote: The new tool is from COVID-19 (2021, December 1st) obtained from https://medicalxpress.com/news/2021-12-tool-people-covid-.html on December 1st, 2021. Helps determine the best way to protect yourself and others

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New tools help people determine the best way to protect themselves and others from COVID-19

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