Exposure to the virus that can linger in the air for minutes or hours is a rare route of infection, they note.
A few days ago, the website of the United States Centers for Disease Control and Prevention (CDC) included the possibility of contagion through the air in its guide on how COVID-19 spreads. Hours later he deleted the information explaining that it had been an error. Now, CDC once again admits that coronavirus can be transmitted through the air, even beyond six feet away.
After backtracking on the information he had posted about the presence of small droplets infected with the virus in the air that could infect a healthy person when breathed in, this US health authority again included the warning that “COVID-19 can sometimes be spread by airborne transmission.”
“Some infections can be transmitted by exposure to the virus in small droplets and particles that can remain in the air for minutes to hours.. These viruses can infect people who are more than 6 feet away from the infected person or after that person has left the space, ”reads the new information from the CDC.
The guide cautions that evidence shows that people infected with SARS-CoV-2 were able to infect others more than six feet away “within confined spaces that had inadequate ventilation. Sometimes the infected person breathed heavily, for example while singing or exercising, “and the infection occurred while sharing the same space or” shortly after the person with COVID-19 left. “
Although it is known that infectious viruses exist through the air, such as measles, tuberculosis and chicken pox, the institution points out that “it is much more common for the virus that causes COVID-19 to spread through close contact with a person who has COVID-19 than through air transmission ”.