More than three million people in the US have tested positive for Covid-19, according to Johns Hopkins University.
Over 131,000 deaths have been reported, and on Tuesday the US broke its record for most new cases reported in one day.
Despite the rise, the White House wants to press forward on some reopenings, including for schools.
US Vice-President Mike Pence, who leads the White House Coronavirus Taskforce, argued rules should not be "too tough".
Cases were flattening out, he said, while President Donald Trump said on Tuesday that America was "in a good place" regarding the pandemic.
Over 60,000 new cases were reported Tuesday, shattering the previous highest tally of 55,220 new cases on 2 July.
The latest figures come as the states of California and Texas each reported more than 10,000 new daily cases.
Dr Anthony Fauci, infectious disease expert and adviser to the White House on the coronavirus, said the country was still "knee-deep" in only its first coronavirus wave.
What did Mr Pence say?
Speaking to reporters at the US Department of Education on Wednesday, Mr Pence defended the Trump administration's response to the pandemic.
"While we mourn with those who mourn, because of what the American people have done, because of the extraordinary work of our healthcare workers around the country, we are encouraged that the average fatality rate continues to be low and steady," he said after lowering his face mask.
He added that the US Centres for Disease Control and Prevention (CDC) will issue new guidelines on reopening schools after Mr Trump criticised a plan put forward by the expert body as "very tough and expensive" and threatened to cut off funding to schools that don't open in the autumn.
"The president said today we just don't want the guidance to be too tough," Mr Pence said. "That's the reason why, next week, CDC is going to be issuing a new set of tools, five different documents that will be giving even more clarity on the guidance going forward."
Schools in the US normally begin for the year in either August or early September.
The CDC's guidelines suggest pupils and staff all wear face coverings and stay at home if necessary. They also suggest schools should implement staggered timetables and socially distanced seating arrangements, and close communal spaces.
What other developments have their been?
On Wednesday, United Airlines warned that unless flights dramatically increase, the company will have to lay off nearly half of its workers – totalling some 36,000 employees.
In a memo to employees, the Chicago-based airlines requested that they undergo voluntary furloughs, and warned that flight attendants and airport customer service personnel will be most affected.
Meanwhile, two prestigious universities in the US are taking legal action against the government over an immRead More – Source
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