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WHO reviewing spread of COVID-19 in the air

09/07/2020

WHO reviewing spread of COVID-19 in the air

Following an open letter from more than 200 scientists to the World Health Organization (WHO), the international body is rethinking its stance on how COVID-19 spreads through the air.


“We wanted them to acknowledge the evidence,” Jose Jimenez, a chemist at the University of Colorado who signed the paper, told the Reuters news agency.


“This is definitely not an attack on the WHO. It's a scientific debate, but we felt we needed to go public because they were refusing to hear the evidence after many conversations with them,” he said.


The WHO has acknowledged that emerging evidence shows how the coronavirus can be spread by tiny particles suspended in the air. It’s a reality that makes transmission of the virus in crowded, closed or poorly ventilated spaces much more likely. Outdoors, the aerosols evaporate and disperse much more quickly, reducing the risk of infection.


Until now, WHO guidance does not address the fact that COVID-19 can be transmitted through minuscule droplets that hang in the air for potentially hours.


All the evidence will now be thoroughly evaluated to determine its reliability, which could lead to new advice and guidelines from the WHO. As a result, compulsory face mask rules and even stricter social distancing measures could be implemented in places like bars, restaurants and public transport.


 


 

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