The Centers for Disease Control and Prevention have changed its definition of a “close contact,” which impacts the agency’s recommendation on who should quarantine amid the coronavirus pandemic.

The Centers for Disease Control and Prevention on Wednesday expanded how it defines a “close contact” of someone with Covid-19 as it released new evidence showing the coronavirus can be passed during ...

The US Centers for Disease Control and Prevention has updated its definition of a close contact with a Covid-19 patient to include multiple, brief exposures, after a Vermont prison worker appears to ...