As many as 20 million Americans may have contracted the CCP virus, a figure nearly 10 higher than the more than 2.4 million cases that have been confirmed, the Centers for Disease Control and Prevention (CDC) said Thursday.
In a briefing with reporters Thursday, CDC Director Dr. Robert Redfield said surveys of blood samples taken nationwide, some by the CDC and others from blood donations and other sources, suggest that millions of Americans may have contracted the virus either without knowing it or by being asymptomatic carriers.