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Footage shows how long respiratory droplets linger after someone coughs or sneezes

With coronavirus cases around the world now well into the millions, fears about the spread of the virus are now widespread.
Studies have revealed that the main way the virus spreads is through respiratory droplets from sneezes or coughs.
Now, researchers from the Japanese Association for Infectious Disease have revealed just how long these droplets can linger in the air.
Kazuhiro Tateda, a researcher on the study, explained: “It seems the transmissions are happening during conversations and even when people are standing a certain distance apart.
“These cases can’t be explained by ordinary droplet infection. We think infection comes from ‘micrometre particles.’”
In the study, the researchers used a high sensitivity camera to film the respiratory droplets released from a man while sneezing and speaking.
The high sensitivity camera revealed that while large respiratory droplets quickly fell to the ground after the man sneezed, smaller particles lingered in the air.
The researchers explained: “These particles are all smaller than 10 micrometers, or 1/100 of a millimetre in diameter.”
Meanwhile, as the man spoke with a friend, the camera revealed that many microdroplets were released, floating in the air between the two men.
Mr Tateda explained: “It’s not yet known what volume of micro droplets leads to infection, but we can’t rule out the possibility that microdroplets spread the virus to some extent.”
The video comes shortly after a White House advisor claimed that coronavirus could spread through speaking.
A letter by Dr Harvey Fineberg, chairman of a committee with the National Academy of Sciences, reads: “While the current [coronavirus] specific research is limited, the results of available studies are consistent with aerosolisation of virus from normal breathing.”
Source : Mirror

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Corona Newsline Supported by LiiFii Research Foundation.