UPDATE: WASHINGTON (AP) -- The government's top infectious disease expert has told a House committee he believes "it will be when and not if" there will be a COVID-19 vaccine.
Dr. Anthony Fauci also says he remains "cautiously optimistic" that some will be ready at the end of the year.
He has returned to Capitol Hill at a fraught moment in the nation's pandemic response, with coronavirus cases rising in about half the states and political polarization competing for attention with public health recommendations.
Fauci was testifying along with the heads of the Centers for Disease Control and Prevention, the Food and Drug Administration, and a top official at the Department of Health and Human Services.
One vaccine candidate will enter advanced trials next month.
Fauci says "we feel cautiously optimistic based on the concerted effort."
The White House has launched an effort called "Operation Warp Speed" to make sure a vaccine can be quickly mass-produced and distributed when it's approved by the Food and Drug Administration.
By LAURAN NEERGAARD and RICARDO ALONSO-ZALDIVAR
WASHINGTON (AP) — Dr. Anthony Fauci is returning to Capitol Hill at a fraught moment for the nation's pandemic response.
Coronavirus cases are rising in about half the states and political polarization is competing for attention with public health recommendations.
The government's top infectious disease expert is testifying Tuesday before a powerful House panel, along with the heads of the Centers for Disease Control and Prevention and the Food and Drug Administration.
The nation is emerging from weeks of stay-at-home orders and business shutdowns. But that's being done in an uneven way, with some states far less cautious than others.
By LAURAN NEERGAARD and RICARDO ALONSO-ZALDIVAR Associated Press