The summer began with the promise that vaccinated Americans could largely go maskless, and travel swelled over the Fourth of July weekend to prepandemic levels. But the celebrations has turned out to be short-lived as the Delta variant of the coronavirus surges across the United States and momentum gains for mandating Covid-19 vaccines and, once again, masks.

The United States is averaging more than 124,000 new virus cases each day, more than double the levels of two weeks ago and the highest rate since early February, according to a New York Times database. Hospitals in hot spots around the country are approaching capacity.

With all of this at play, President Biden has urged the private sector and state and local governments to ramp up pressure on the nearly one-third of eligible people in the country who remain unvaccinated. He has also ordered all civilian federal employees to be vaccinated or submit to regular testing and other restrictions.

And on Monday, the Pentagon said that it would require the country’s 1.3 million active-duty military troops to be vaccinated “no later” than next month. About 64 percent of active-duty service members are fully vaccinated — a rate that is low enough to have national security implications, because it could make it difficult to deploy troops to countries with strict requirements.

Defense Secretary Lloyd J. Austin III said in a memo that he would seek to speed up the mandate if the Food and Drug Administration grants full approval to the Pfizer vaccine before mid-September, which the agency aims to do. More mandates in the private sector are also expected after the F.D.A. approval.

New requirements are also being brought in at the state and local level.

In Washington State, Gov. Jay Inslee said that most state employees and all health care workers must be fully vaccinated against the virus by Oct. 18 or risk losing their jobs. California and Hawaii have announced similar mandates.

And even as several Republican-led states have barred businesses from requiring consumers to provide proof of vaccination, about a quarter of all U.S. hospitals are requiring staff members to be vaccinated, a spokesman for the American Hospital Association told CNN. Hospitalizations are soaring in areas with low vaccination rates.

Inoculations have picked up again in the country, but public health experts note that it takes weeks for the vaccines’ full effect to kick in. They say that more immediate measures, like mask mandates, are needed.

Posted in: USA