More than half of the cases of coronavirus are transmitted to humans without symptoms of the virus, according to a new model from the Centers for Disease Control and Prevention.
“In this basic case, 59% of all transmission came asymptomatic transmission, containing 35% of presymptomatic individuals and 24% of individuals who never developed symptoms,” the model says.
Presymptomatic individuals are those who did get symptoms of the virus, but were asymptomatic and contagious before they developed symptoms.
The authors concluded “that the identification and isolation of persons with symptomatic COVID-19 alone will not control the continuous spread of SARS-CoV-2. ”
According to the model, which was posted on JAMA Network on Thursday, there should be more focus on people who do not show symptoms, in order to slow down the spread of the virus.
“These findings suggest that measures such as wearing masks, hand hygiene, social distance and strategic testing of people who are not ill will be the basis for slowing the spread of COVID-19 until safe and effective vaccines are available and widespread. used, “the authors said.
Vaccines are rolling out at a slower pace than expected. Elected President Joe Biden
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“The bottom line is that controlling the COVID-19 pandemic should really control the silent pandemic of transmitting asymptomatic individuals,” said Jay Butler, CDC deputy director of infectious diseases and co-author of the study. told The Washington Post. “The community mitigation tools we have should be widely used to slow the spread of SARS-CoV-2 from all infected people, at least until we have the vaccines available.”