Thursday, March 12, 2020

What is the Coronavirus incubation period?

From Big Think. Click here for more.

Coronavirus incubation

About 97.5 percent of people who develop symptoms will do so within 11.5 days, according to the new study.
An important bit of data for anyone following the coronavirus outbreak, aka everyone: It takes an average of 5.1 days for a person infected with the new coronavirus to show symptoms, according to recent research from Johns Hopkins University. Published in the journal Annals of Internal Medicine, the study estimates that the median incubation period of the SARS-CoV-2 (the virus that causes COVID-19) is 5.1 days, and that 97.5 percent of people who develop symptoms will do so within 11.5 days.

However, approximately 2.5 percent of people with the virus seem to develop symptoms after 11.5 days. That means a 14-day quarantine might not be 100 percent effective. In other words, for every 10,000 people quarantined, about 101 would develop symptoms after being released, according to the researchers.

"Whether this rate is acceptable depends on the expected risk for infection in the population being monitored and considered judgment about the cost of missing cases," the researchers wrote. "Combining these judgments with the estimates presented here can help public health officials to set rational and evidence-based COVID-19 control policies."

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