Testing for coronavirus is expanded to patients who have a doctor’s order, CDC says

Experts have questioned whether the United States can meet the likely surge in testing demand that will follow the change in guidelines.

Two kinds of coronavirus tests in the United States have FDA emergency use authorizations and are in use nationwide.

One kind is the CDC test kits that are distributed to public health laboratories across the country, and another test has been designed and used by New York state.

At least 163 coronavirus cases have been reported across 16 states, most of them in California and Washington states.