Two hundred million Americans have received at least one dose of the COVID-19 vaccine, the White House announced Friday. That figure includes more than 1 million doses administered in 24 hours on Thursday, 534,000 of which were first doses.

"Today we hit a milestone: 200M people w/ at least one dose!" Cyrus Shahpar, the White House's COVID-19 data director, wrote on Twitter. "On avg., over 33,000 people have gotten their first dose, every hour of every day since mid-Dec 2020. Keep it up!"

-ABC News' Joshua Hoyos

Boston will require face masks in all indoor public settings beginning Aug. 27 at 8 a.m., Mayor Kim Janey announced in a Friday statement.

"We know that masks work best when everyone wears one," Janey said. "Requiring masks indoors is a proactive public health measure to limit transmission of the Delta variant, boost the public confidence in our businesses and venues, and protect the residents of our city who are too young for vaccination.”

-ABC News' William Gretsky

Republican Lt. Gov. Dan Patrick told Fox News Channel host Laura Ingraham that "African-Americans who have not been vaccinated" are the "the biggest group in most states" driving the spike in COVID-19 cases, during a Thursday interview.

Patrick doubled down on his comment, adding that "over 90% of them vote for Democrats and their major cities and major counties."

"It's up to the Democrats to get -- just as it's up to Republicans to try to get as many people vaccinated," he said. "In terms of criticizing the Republicans for this, we are encouraging people who want to take it to take it, but they are doing nothing for the African-American community that has significant high number of unvaccinated."

NAACP President Derrick Johnson pushed back in a statement: "Lt. Governor Dan Patrick lives in an alternate reality, where facts don’t matter," Johnson said.

"He’s delusional. Black Texans are not the driving force behind the surge of COVID cases in Texas. His statement is not only baseless, it’s racist. Falsely casting blame on the Black community is one of the oldest tricks in the book, and we expect better from an elected official.”

-ABC News' Brian Hartman

Children's of Mississippi, the state's only pediatric hospital, reported a record number of patients Thursday.

There are 28 children, all unvaccinated, with confirmed or suspected cases of COVID-19, the highest since the start of the pandemic, the hospital said on Facebook. Among those, eight children are in the intensive care unit, including five not yet old enough to receive the vaccine, the hospital said.

"The best way to protect ALL of Mississippi's kids from COVID-19 is for everyone age 12 and up to get vaccinated," said the hospital, which is part of the University of Mississippi Medical Center in Jackson.

Nearly 43% of Mississippi residents ages 12 and up are fully vaccinated, according to CDC data, one of the lowest rates in the country.

New Zealand's first instance of COVID-19 transmission in six months has been identified as the highly contagious delta variant.

"We are dealing with a delta variant," New Zealand Prime Minister Jacinda Ardern announced during a press conference in Wellington on Wednesday. "Our case has originated in Australia."

The case, which was detected in the community on Tuesday, prompted New Zealand to immediately impose a nationwide lockdown. More community cases have emerged since then, with the cluster growing to 10 by Wednesday afternoon, according to data from New Zealand's Ministry of Health.

Ardern said genomic sequencing has linked the initial case to an outbreak of the delta variant in neighboring Australia's New South Wales state.

"Now, the job we have is to work through how and when it got here," she said.

It's the first time that the island nation of 5 million people has confirmed the presence of the delta variant, which was initially identified in India last October. At least 148 countries around the globe have reported cases of the delta variant, according to the World Health Organization.

It's also the first time in more than a year that New Zealand has had a snap level four lockdown, the highest level of restrictions.

In total, the country has reported 2,936 confirmed cases of COVID-19 since the start of the pandemic, including 26 deaths, according to health ministry data.