Guidelines from the Centers for Disease Control and Prevention state that those who come in close contact with someone with the coronavirus for more than 15 minutes could spread the virus regardless of whether either party wears a mask.
“Wondering what @cdcgov really thinks about masks? Their guidance on quarantining after exposure to someone with #covid explicitly states whether the infected OR exposed person wore masks doesn’t matter,” former New York Times reporter Alex Berenson tweeted Sunday.
“My mask protects no one. So does yours. Thanks for clearing that up, CDC!” he added, accompanied by screenshots of the CDC’s guidelines.
The CDC states on its Public Health Guidance for Community-Related Exposure page that those who come in close contact with people showing COVID-19 symptoms or someone who has tested positive for the virus can spread the infection whether or not they are wearing masks.
CDC states that “data to inform the definition of close contact are limited.” Factors “to consider” when defining close contact are duration of exposure, proximity to an infected person, and whether or not that person is presenting symptoms. Data for what a prolonged exposure is are iffy; however, longer than 15 minutes can be considered an operational definition, according to the CDC.
“This is irrespective of whether the person with COVID-19 or the contact was wearing a mask or whether the contact was wearing respiratory personal protective equipment (PPE),” the CDC states.
The guidance goes on to say masks “may” help people who are infected with the coronavirus from spreading it but adds that “there is less information” if masks protect a person coming into contact with someone with the virus