CDC changes its definition of COVID-19 'close contact'
CDC Changes COVID-19 Guidelines For Close Contact
CDC Issues New Guidance On Close Contact And Spread Of Covid-19 | NBC Nightly News
CDC redefines close contact definition
CDC redefines COVID-19 close contact
CDC Redefines What Counts as 'Close Contact' for Covid-19
CDC Releases New Guidance On Close Contacts Related To COVID-19
CDC redefines COVID-19 close contact, adds brief encounters
CDC redefines COVID-19 ‘close contact’ | ABC News
New CDC guidelines redefine what is considered close COVID-19 contact
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CDC redefines 'close contact'
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CDC expands definition of ‘close contact’
CDC redefines COVID-19 'close contact'
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CDC changes definition of ‘close contact’