The CDC stressed that close contact with an infected individual remains the most frequent manner in the SARS-CoV-2 virus which leads to COVID-19 spreads but it may also”sometimes” be spread by airborne transmission.
“Some diseases can be spread from exposure to the virus in tiny droplets and particles which could linger in the air for hours or minutes. These viruses could have the ability to infect those who are over 6 feet apart from the individual who’s infected or later that individual has left the distance,” it stated in its updated advice.
Researchers have been calling on governments to deal with the possibility of airborne transmission.
In July, 239 specialists from 32 nations wrote an open letter printed within a British Medical Journal that airborne transmission of COVID-19 has been”being suppressed”. The World Health Organisation then said that airborne transmission in crowded and densely populated regions”can’t be ruled out.
The CDC’s updated advice came on the same day scientists from many US universities such as the Harvard School of Public Health wrote within an open letter published in Science which”there’s overwhelming evidence that inhalation of severe acute respiratory syndrome coronavirus two (SARS-CoV-2) signifies a significant transmission path for coronavirus disorder 2019 (COVID-19).”
They flagged that viruses in droplets normally fall into the grounds in moments in 2 meters of the origin — making physical distancing effective in controlling the spread of this virus, viruses from aerosols can stay suspended in the atmosphere” for several moments to hours, such as smoke, and also be inhaled.”
“Aerosols containing infectious virus may also travel over 2 m and accumulate in the poorly ventilated indoor atmosphere, resulting in superspreading events,” they stated.
“There’s an urgent need to harmonize talks concerning ways of virus transmission across areas to ensure the best control strategies and supply clear and consistent advice to the general public,” they added.
The CDC advises people to remain at least eight feet apart from the others when possible, to cover their nose and mouth with a mask when around others, to prevent crowded indoor spaces, and make certain indoor spaces are appropriately ventilated by bringing in outside air as far as you can.