https://www.mcclatchydc.com/news/coronavirus/article241703806.html

BY MADDIE CAPRON
APRIL 01, 2020 11:05 PM, UPDATED 17 MINUTES AGO

The Centers for Disease Control and Prevention says up to 1 in 4 people infected with coronavirus will show no symptoms. Data from Iceland, however, show that number could be double.

CDC Director Robert Redfield said in an interview with NPR this week that many people who become infected with coronavirus can remain asymptomatic.

“That may be as many as 25%,” he said in the interview. “That’s important, because now you have individuals that may not have any symptoms that can contribute to transmission, and we have learned that in fact they do contribute to transmission.”

Redfield said with so many people not showing symptoms, there can be “significant asymptomatic transmission,” according to NPR.

People who do show symptoms, however, often are spreading the virus up to 48 hours before those symptoms appear, he said.

“This helps explain how rapidly this virus continues to spread across the country, because we have asymptomatic transmitters and we have individuals who are transmitting 48 hours before they become symptomatic,” Redfield said.

</snip>