'You Need a Test': CDC Reverses Controversial Guidance for A
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The Centers for Disease Control and Prevention on Friday reversed a controversial recommendation suggesting people who have had close contact with a person infected with the coronavirus do not need to get tested if they have no symptoms.

The new guidance said that people without symptoms who have been in close contact with an infected person “need a test.” The CDC defines “close contact” as being within 6 feet of a person with a confirmed Covid-19 infection for at least 15 minutes

The original guidance, posted on Aug. 24, drew sharp criticism even from the CDC.’s partners, including the Infectious Diseases Society of America, which urged its members to continue testing people without symptoms.

Several studies have shown that people can efficiently spread the virus even if they don’t have symptoms. Some research has suggested that they are actually most likely to transmit to others starting around a day before the onset of symptoms, when the viral load can be the highest.

The new guidance advised people awaiting test results to “self-quarantine/isolate at home and stay separated from household members to the extent possible and use a separate bedroom and bathroom, if available.”

The updated guidance also said that people who don’t have symptoms and who have not been exposed to an infected person “do not need a test unless recommended or required by your healthcare provider or public health official.” The previous guidance definitively said that such people do not need to be tested.

Source: https://www.cdc.gov/coronavirus/2019-ncov/hcp/testing-overview.html
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