Coronavirus is transmitted through the air, but the humidity spreads: study


GEtty

In this image taken on April 29, 2020, an engineer shows a plastic model of the COVID-19 coronavirus.

If coronavirus is often spread by inhaling respiratory droplets from infected people, then there is reason to avoid removing these droplets is the key to not getting COVID-19. One way to do that, according to a new study, is to keep humidity levels in indoor settings at 40 to 60 percent.

Researchers from the Leibniz Institute for Tropospheric Research (TROPOS) in Leipzig and the CSIR National Physical Laboratory in New Delhi came to this conclusion after analyzing 10 international studies conducted between 2007 and 2020 to look at the rate of survival and infections of coronaviruses and influenza based on humidity levels in the air.

What they say they have discovered is “at higher humidity, the droplets grow faster, fall to the ground earlier and can be less inhaled by healthy people,” meaning that viruses can not spread as easily in humid conditions.


The new study is under evidence of montage that shows that Coronavirus can hang in the air and infect people who inhale it & it is not just transmitted directly from person to person

GettyParticipants wearing FFP2 protective face masks will take part in the RESTART-19 Covid transmission risk assessment study at a concert venue in an indoor arena during the coronavirus pandemic on August 22, 2020 in Leipzig, Germany. The study, organized by the University Hospital of Halle (Saale), simulates a live concert hall with several thousand audience members in three different scenarios to develop risk reduction measures for major events. Participants wear tracer devices to track their movements and sensors measure aerosol currents in the arena. All participants had to undergo a Covid-19 test in the last 48 hours and test negative to participate.

The new findings reflect the findings of other researchers, but according to the Journal, Nature, major health agencies such as the World Health Organization have been reluctant to accept this evidence or issue directions to reflect that the coronavirus may be in the air in certain settings. it can spread even after a person leaves the building.

In May, the WHO said, “At present, there is no strong evidence to suggest that a well-maintained air conditioning, ventilation, or other type of climate control system will contribute to the transmission of COVID-19.”

But by July, the WHO had changed its tune a bit, saying, “We need to be open to this evidence and the implications of the shipping methods, as well as to the precautionary measures that need to be taken,” according to Nature.

That was a day after comments were published by two researchers from the University of Oxford Press and supported by 239 other scientists from around the world who said there was enough evidence that the virus was in the air, yet no precautionary measures are taken to interrupt these transmission means.

The comment with the title, It’s time to tackle COVID-19’s air travel sei,

It is understood that there is not yet universal acceptance of the SARS-CoV2 air transport system; but in our collective assessment there is more than enough supporting evidence that the precautionary principle should apply. To control the pandemic, pending the availability of a vaccine, all transmission routes must be interrupted.

We are concerned that the lack of recognition of the risk of COVID-19 air transport and the lack of clear recommendations on control measures against the air agency will have significant consequences: people may think that they are fully protected by following the current recommendations, but in fact additional interventions in the air are needed to further reduce risk of infection.


The authors of the new study encourage the implementation of standards for humidity inside rooms where many people congregate

A team member at the ‘Grosvenor Casino Leo’ prepares a roulette table for playing, equipped with perspex screens to share adjacent players to provide a Covid-safe environment, in Liverpool, North West England on 17 August 2020. – Casinos and bowling alleys were allowed to reopen over the weekend as theater and music halls inside had to be restored with socially distant audiences after they were closed during the lockdown.

Because scientists understand the way particles are affected by the conditions in the air, they say that ignoring this mode of transmission is a mistake, especially with winter days, because heaters, like air conditioners, dry out the air.

Dr Ajit Ahlawat said in the new study with the title, Coronavirus SARS-CoV-2 spreads more indoors at low humidity, “If the relative humidity of indoor air is below 40 percent, then the particles emitted by infected people absorb less water, stay lighter, fly further through the room and are more likely to be inhaled by healthy people. In addition, dry air also makes the mucous membranes in our noses dry and more transparent to viruses. ”

It is the researchers’ recommendation, “In order to contain the COVID-19 pandemic, it is therefore extremely important to implement standards for indoor humidity in crowded rooms, such as hospitals, open offices or public transport.”

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