New guidance from the CDC says that 15 minutes of exposure – regardless of whether that occurs at one time – can result in transmission of the coronavirus.
Currently, the agency recommends that people who aren't up to date on their shots stay at home for at least five days after close contact with someone who tests positive for Covid-19. Going.
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To determine the best action, we matched exposure information from COVID-19 case investigations with reported test results and calculated the secondary attack rates (SARs) after masked and unmasked exposures. Mask use by both parties reduced the SAR by half, from 25.6% to 12.5%. Longer exposure duration significantly increased SARs.
Everyone exposed should get a COVID-19 test five days after exposure. More:CDC cuts isolation time for Americans who test positive from 10 days to 5. Latest COVID-19 updates. Ohio has often.
People without COVID-19 symptoms may not need to be tested even after exposure to the virus, the Centers for Disease Control and Prevention said in a reversal of earlier guidelines.
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