New York Governor Andrew Cuomo has pleaded for medical supplies, warning Covid-19 is spreading in his state faster than “a bullet train”.
“The apex is higher than we thought and the apex is sooner than we thought,” Mr Cuomo told reporters on Tuesday.
He said the federal government was not sending anywhere near enough lifesaving equipment to confront the crisis.
New York now has over 25,000 confirmed virus cases and at least 210 deaths.
The World Health Organization (WHO) said on Tuesday the US has the potential to become the new epicentre of the coronavirus pandemic.
The warnings come as President Donald Trump said he hoped the US would reopen for business next month.