About 1 in 15 people in England tested positive for COVID-19 in the week ending Dec. 31, 2021, according to new data published Wednesday by the UK's Office of National Statistics -- a jump from 1 in 25 the week before.

This means that an estimated 3,270,800 people in the country caught the virus last week, with the most infections occurring among those between ages 17 and 24, the ONS said.

Additionally, 1 in 20 people contracted COVID last week in Scotland and Wales as did 1 in 25 people in Northern Ireland.

The ONS noted that these estimates do not include people who tested positive in "hospitals, care homes and/or other communal establishments."

COVID-19-related hospitalizations in New York surpassed 10,000 for the first time since the early days of the pandemic.

As of Tuesday, there are 10,411 people hospitalized statewide with the virus, which is the highest figure seen since May 2020.

About 1,300 patients are currently in intensive care units.

Unvaccinated New Yorkers are more likely to be hospitalized than those who are fully vaccinated. During the week ending Dec. 20, unvaccinated people were hospitalized at a rate of 30.01 per 100,000 compared to a rate of 2.08 per 100,000 for fully vaccinated people, according to state data.

Polish President Andrzej Duda tested positive for COVID-19 Wednesday.

This is the second time Duda has contracted the virus. He previously tested positive in October 2020.

"The president is fine, has no severe symptoms and is under constant medical care," Pawel Szrot, Head of the Cabinet, tweeted Wednesday.

Szrot said Duda is fully vaccinated and received a booster shot last month.

Michigan Gov. Gretchen Whitmer was isolating after her husband, Dr. Marc Mallory, tested positive for COVID-19, her office said in a statement.

Whitmer's office said the governor tested negative on Tuesday using a rapid test. She was awaiting the results of a PCR test.

"Thankfully, the entire family is fully vaccinated and boosted, so the governor has not tested positive and is not experiencing symptoms," Whitmer's office said in a statement. "Until the PCR test comes back, the governor is isolating in a separate area of the house and has taken steps to complete contact tracing to keep others safe."

Dr. Rochelle Walensky, director of the U.S. Centers for Disease Control and Prevention, is standing by her agency's new quarantine and isolation guidance for COVID-19, which the nation’s largest association of physicians has criticized as "confusing."

The CDC updated its guidelines on Dec. 27, saying asymptomatic people who test positive for COVID-19 should self-isolate for five days rather than 10. In a scathing statement released Wednesday night, the American Medical Association (AMA) said the new recommendations "are risking further spread of the virus."

"The American people should be able to count on the Centers for Disease Control and Prevention (CDC) for timely, accurate, clear guidance to protect themselves, their loved ones, and their communities. Instead, the new recommendations on quarantine and isolation are not only confusing, but are risking further spread of the virus," the AMA's president, Dr. Gerald E. Harmon, said in the statement. "With hundreds of thousands of new cases daily and more than a million positive reported cases on January 3, tens of thousands -- potentially hundreds of thousands of people -- could return to work and school infectious if they follow the CDC’s new guidance on ending isolation after five days without a negative test."

But Walensky defended the new guidance, telling ABC News' Cecelia Vega in an interview Friday on "Good Morning America" that the CDC "make[s] these recommendations in the context of science, in the context of ongoing epidemiology and in the context of what is feasible in collaboration with our public health and local and state public health partners."

"I've read the AMA statement and I have deep respect for the AMA," Walenskey said, "but I will also say we've heard a lot of support for ongoing guidance from public health partners, from other clinical and laboratory partners as well."

Walensky referenced "dozens of studies" that have shown a COVID-19 patient is most infectious in the one to two days before symptoms and the two to three days after symptoms.

"So by five days after your symptoms, the vast majority of your contagiousness is really behind you," she said. "And what we say at day five then is, are your symptoms gone? Are you feeling better? Is your cough gone, sore throat gone? And if so, then it is safe to go out if you are wearing a mask all the time. And that means not going out to restaurants, not going out to gyms, not going out and visiting grandma, but really conscientiously wearing your mask for those last five days."

Walensky noted that people may choose to take an antigen or at-home test at day five, if they have access to one. But it's not required.

"If that test is positive, you should stay home for those extra five days. But if that test is negative you should go out and continue to wear your mask," she said. "You know, these tests are actually not authorized for the purpose of evaluating contagiousness."