New coronavirus cases reported each day in the US are reaching levels unseen since the initial height of the pandemic as states are lifting economically devastating shutdown measures meant to avert the spread of infections.

New cases have topped 30,000 each day this week and are on track to surpass the peak of daily infections last seen in mid-April.

Infections began to fall last month as states imposed restrictive social distancing measures and ordered millions of Americans to stay home, but the efforts wrought havoc on the economy. Nearly 21 million people were unemployed as of last week after businesses were forced to close their doors.

But unlike other regions — namely Europe, where cases have continued to decline amid those efforts — the US has seen infectious surge once more as bars, churches and summer camps reopen around the country. Donald Trump and many Republican officials have urged the country to jump-start the economy despite concerns from public health officials who have warned that the first wave of the pandemic is far from over.

More than 2.3 million people in the US have now been infected with the virus and nearly 122,000 have died. And at least 20 states are seeing infection rates rise, with many setting daily records again and again.

On Wednesday, California reported more than 7,000 new cases in the previous 24-hour period, a new record. governor Gavin Newsom urged residents to “be more vigilant” as the virus spreads but noted the state’s hospital system had prepared for such an outcome during the initial stay-at-home order.

“We are confident in our capacity, in the short run, to meet the needs of those most in need in the state of California,” he said.

Other officials had a more dire outlook. In Texas, one of the first states to reopen, governor Greg Abbott said the surge was a “massive outbreak” and warned that hospitals would need to prepare for a shortage in hospital capacity.

“Our #COVID19 numbers are moving in the wrong direction,” Houston mayor Sylvester Turner wrote on Twitter. He told the city council Wednesday that Houston’s intensive-care units were at 97% capacity, with more than one-quarter of patients infected with the coronavirus.

Several states have considered imposing orders mandating that people wear masks outside. Washington governor Jay Inslee did so this week, saying the move was “about saving lives,” and North Carolina governor Roy Cooper followed suit, delaying reopening measures for at least three weeks.

The governors of New York, New Jersey and Connecticut went a step further, announcing a travel advisory for visitors from a handful of states that have “significant community spread.” Those travellers will be required to quarantine for 14 days upon arrival in the tri-state area.

“A lot of people come into this region and they could literally bring the infection with them,” New York governor Andrew Cuomo said Wednesday. “It wouldn’t be malicious or malevolent, but it would still be real.”