World Health Organization acknowledges that coronavirus can linger in the air

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The updated brief comes days after 239 scientists had written an open letter to the health agency urging it to look into the possibility of airborne transmission.

The agency said that most spread is via droplets from infected people who cough or sneeze, but added that people without symptoms are also capable of transmitting the disease.

On Tuesday, the World Health Organization acknowledged that there was an emerging evidence of the airborne spread of coronavirus.

Scientists believe the virus may have originated in bats, then was transmitted through another mammal such such as a civet cat or an armadillo-like pangolin before being passed on to people at a fresh food market in the central Chinese city of Wuhan late past year.

For years, scientists met much the same resistance concerning influenza, because of the difficulty of capturing samples of the virus in the air, Milton said.

The WHO previously said asymptomatic transmission, while it may occur, was probably "very rare".

It acknowledged that the virus has the likelihood of spreading at indoor crowded spaces like restaurants, gyms, through aerosol transmission.

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"I interpret this as saying while it is reasonable to think it can happen, there's not consistent evidence that it is happening often", Bill Hanage, an epidemiologist at the Harvard T.H. Chan School of Public Health, said in an email.

The worst hit country, the USA, is approaching the grim milestone of nearly one in every hundred people infected with Covid-19.

The following is a brief roundup of some of the latest scientific studies on the novel coronavirus and efforts to find treatments and vaccines for COVID-19, the illness caused by the virus.

In its latest transmission guidance, the World Health Organization acknowledged that some outbreak reports related to indoor crowded spaces have suggested the possibility of aerosol transmissions, such as during choir practice, in restaurants or in fitness classes.

She said the pair would go through available material and "fine it down to what we can get.to get the maximum benefit out of this".

In contrast, he said, the United States "not only announced its withdrawal from the World Health Organization, but also politicised the anti-epidemic issue and played a buck-passing game to shift responsibilities". "So if any individual sneezed, it could journey by way of the air as substantial droplets and get to your mouth and nose and result in an an infection", explained Kmush, who was not associated in the World Health Organization report.

However, "there are many examples from around the world that have shown that, even if the outbreak is very intense, it can still be brought back under control", said Tedros. "It features the use of masks wherever acceptable in certain options, specifically the place you can not do actual physical distancing, and specially for health care personnel".

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