US health officials reported over 60,000 new cases of the viral infection on Wednesday.
The figure is the biggest increase ever reported by a country in a single day since the coronavirus first emerged in China late last year and quickly spread to the rest of the world.
The US deaths also rose by more than 900 for the second straight day, on Wednesday.
That has pushed the US virus cases to 3,054,695, with a death toll of 132,299 as of July 9, according to Johns Hopkins University (JHU).
The resurgence of the virus has forced many US states to reinforce restrictions and order the closure of their economy again.