US infectious disease chief Dr Anthony Fauci says the nation has a "serious problem" as 16 states reel from a spike in COVID-19 cases.
At the first White House task force briefing in two months, Dr Fauci says the only way they are going to end it is by ending it together.
As health experts said more must be done to slow the spread, Vice-President Mike Pence praised US "progress".
The US hit an all-time daily high of 40,000 new infections on Thursday.
There are 2.4 million confirmed infections and 124,749 deaths nationwide - more than any other country.
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