The tiny droplets are very fine, and the aerosol particles formed when these pure droplets dry quickly, are small enough to stay in the air for minutes to hours, the CDC said.
The Centers for Disease Control and Prevention (CDC) in the United States has reviewed its airborne coronavirus guidelines.
New international advice states that current evidence suggests that coronavirus mainly spreads through close contact with aerosols or droplets and can also spread to airless and overcrowded indoor areas because aerosols can remain airborne and travel more than a meter away.
The CDC’s advice, revised Friday, lists “breathing in close proximity to an infected person releasing tiny droplets and particles containing the virus” as one of the three methods distributed by COVID-19.
It states that the most common form of infection is inhalation of tiny droplets or particles of an infected person standing within two meters, or with tiny droplets and particles around the eyes, nose or mouth, especially coughing and sneezing.
The organization states: “Inhaling airborne microscopic airborne particles and aerosol particles containing infectious bacteria. The risk of transmission is greatest within 3 to 6 meters in an infectious well where the concentration of these droplets and the finest particles. “
It also warned that the airborne virus could be transmitted even if the infectious source was more than six meters in some cases, especially indoors.
“People excrete respiratory fluids during respiration (eg silent breathing, talking, singing, exercise, coughing, sneezing) in the form of droplets in a wide range. These droplets carry the virus and transmit the infection,” notes the revised guidelines on the website. .
Recently, a Lancet study, justifying the noise, states that there is consistent and strong evidence that the SARS-CoV-2 virus is still widely distributed in the air.
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