About 40% Of COVID-19 Infections Asymptomatic – U.S. CDC

FILE – In this June 16, 2020, file photo, guests required to wear masks because of the coronavirus stroll through the Disney Springs shopping, dining and entertainment complex in Lake Buena Vista, Fla. Magic Kingdom and Animal Kingdom will reopen on July 11. In May, the company opened Disney Springs. (AP Photo/John Raoux, File)

Around 40 percent of positive COVID-19 cases showed no symptoms of the coronavirus disease, according to the latest “COVID-19 Pandemic Planning Scenarios” from the U.S. Centers for Disease Control and Prevention (CDC).


This document, which the agency said can be used to estimate the possible effects of COVID-19 in U.S. states and localities, was first posted on May 20. The July 10 update is based on data received by the U.S. CDC through June 29.

The new percentage of infections that are asymptomatic, under the CDC’s “current best estimate,” is up from the 35 percent the agency estimated on May 20.

Also, under the agency’s current best estimate, an asymptomatic individual is 75 percent as infectious as a symptomatic individual.

“Asymptomatic cases are challenging to identify because individuals do not know they are infected unless they are tested, which is typically only done systematically as a part of a scientific study,” the CDC said.


Written by PH

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