New York City will soon require vaccinations for workers and customers for indoor dining, indoor fitness facilities and indoor entertainment facilities, Mayor Bill de Blasio announced Tuesday.

This mandate will be enforced as of Sept. 13.

The Biden administration has hit a vaccine-sharing milestone, shipping more than 110 doses to over 60 countries around the world, mostly through COVAX, the World Health Organization's vaccine-sharing initiative. The U.S. has shared more doses than every other country combined, according to United Nations data.

Starting at the end of August, the U.S. will begin shipping another batch of 500 million doses of Pfizer to 100 low-income countries across the globe. Two-hundred million of those 500 million doses are expected to be shipped in 2021.

-ABC News’ Sarah Kolinovsky

Another 81 COVID-19 patients were admitted to Arkansas hospitals on Monday, the highest increase in hospitalizations since the beginning of the pandemic, Gov. Asa Hutchinson tweeted.

The state now has 1,220 COVID-19 patients in hospitals, including 250 on ventilators.

"We continue to see nearly all hospitalizations among the unvaccinated," the governor wrote. "Hospitals are full & the only remedy is for more Arkansans to be vaccinated."

Kaiser Permanente, the country's largest nonprofit health care organization, announced Monday that it will require all its employees and physicians to be vaccinated.

The organization, which has facilities in eight states and the District of Columbia, said the move was done to protect its workforce and patients from the rising delta variant.

As of July 31, 77.8% of 216,000 Kaiser Permanente employees and more than 95% of 23,000 Permanente Medical Group physicians have been fully vaccinated, the company said.

Kaiser Permanente set a target of Sept. 30 for all of its employees to be vaccinated. It will allow exceptions for medical and religious reasons.

In Louisiana, which has the nation's highest case rate per 100,000 residents, COVID-19 hospitalizations are reaching peak levels, with more than 1,700 patients now receiving care.

"We're seeing people that are way too young to be so sick," David Wrightson, a respiratory therapist and ECMO (extracorporeal membrane oxygenation) specialist for the Willis-Knighton Health System in Shreveport, Louisiana, told ABC News. "We see families destroyed. We see children without one or more parent because of this virus. We see a new mom who will never go home to see her newborn, will never see her child grow up."

He went on, "When you see someone that's 30 years old with no medical problems at all, nobody knew anything was wrong, and we have this person literally on death's doorstep, doing everything in our power to turn them around and return them to their family. The vaccine is something worth getting."

More people need to see and understand the reality of this disease, he said.

"I wish I could show them a few steps in our day to see what we see and to see what we have to do, and to go home at night and, and have nightmares about those things, and sometimes cry yourself to sleep," he said.

-ABC News’ Erica Baumgart and Arielle Mitropoulos