Centers for Disease Control and Prevention

The CDC's planning guidance for states includes multiple scenarios for the rollout of a vaccine this year, including possibly having a limited number of doses available in October and November.

Dr. Deborah Birx says the Centers for Disease Control and Prevention is creating a new way to track COVID-19 hospitalizations a month after such data collection was moved outside the agency.

The federal government says that as of Aug. 1, all laboratories must include detailed demographic data when reporting test results in order to help fight the pandemic nationally.

The Centers for Disease Control now recognizes chills, repeated shaking with chills, muscle pain, headache, sore throat and new loss of taste or smell as symptoms of the disease.

State authorities say two COVID-19 patients have died, bringing the known death toll in the U.S. to 19. Around the world, schools, companies and even the Vatican are calling off major events.

The tests will likely find infections around the country — including cases that had gone undetected. The CDC says it has enough kits to test at least 75,000 people and that more are on order.

The first suspected U.S. case of novel coronavirus infection through "community spread" was left undiagnosed for days, hospital officials said, because the case didn't fit the CDC's criteria.

A problem with one ingredient in test kits that the Centers for Disease Control and Prevention distributed to labs around the U.S. had created a frustrating bottleneck.