The White House coronavirus task force warned that much of the country is in the grips of an “unrelenting” surge in Covid-19 cases and urged tough countermeasures, as the reported number of U.S. infections hit a new daily record of more than 91,000.

New York, the former epicenter of the U.S. Covid-19 pandemic, became the fourth U.S. state to surpass half a million coronavirus cases amid a nationwide surge in infections.

The United States saw the country’s highest-ever number of new Covid-19 cases in the past two days, keeping the pandemic a top election issue as Vice President Mike Pence travels the U.S. to campaign despite close aides testing positive.

The United States broke the country’s daily record for new coronavirus infections with a reported 84,218 new cases due to outbreaks in virtually every part of the country, according to a Reuters tally.

Students in Boston’s public schools will shift to remote learning due to the rising Covid-19 infection rate in the city that was ravaged by the pandemic in the spring.

New York, New Jersey and Connecticut urged their residents to not travel between the three states as the U.S. Northeast sees a rise in Covid-19 cases, while California said major theme parks including Disneyland would not be opening anytime soon.

Wisconsin and other states in the U.S. Midwest and beyond are battling surges in Covid-19 cases, with new infections and hospitalizations rising to record levels in an ominous sign of a nationwide resurgence as temperatures get colder.

U.S. cases of the novel coronavirus crossed 8 million, rising by 1 million in less than a month, as another surge in cases hits the nation at the onset of cooler weather.

The number of new Covid-19 cases rose 11% in the United States last week compared to the previous seven days, with infections spreading rapidly in the Midwest, which reported some of the highest positive test rates, according to a Reuters analysis.

Nine U.S. states reported record increases in Covid-19 cases over the last seven days, mostly in the upper Midwest and West where chilly weather is forcing more activities indoors.