Psaki said she has mild symptoms and is working from home.
As the COVID-19 pandemic has swept the globe, more than 4.9 million people have died from the disease worldwide, including over 744,000 Americans, according to real-time data compiled by Johns Hopkins University's Center for Systems Science and Engineering.
Just 67.7% of Americans ages 12 and up are fully vaccinated against COVID-19, according to data from the U.S. Centers for Disease Control and Prevention.
The FDA authorized the Pfizer vaccine for children ages 5 to 11 on Friday.
An initial 15 million doses are expected to start shipping out of Pfizer’s manufacturing plant within 24 hours.
No vaccinations will start until the CDC director signs off. The director is likely to sign off on Nov. 2, with vaccinations likely beginning Nov. 3.
A new study from the CDC finds that people with "natural" immunity through infection were more than five times more likely to become infected with COVID-19 compared to people who were fully vaccinated.
The study reviewed more than 7,000 people across nine states, measuring infections and hospitalization rates three to six months after either vaccination or initial infection. The study -- published in the CDC's weekly journal, the MMWR -- reaffirms prior research indicating that vaccines offer superior protection than natural immunity.
-ABC News' Sony Salzman
ABC News expects the FDA to authorize the Pfizer vaccine for children ages 5 to 11 on Friday, according to people familiar with the agency’s planning.
The exact timing of the announcement is not yet known.
But no vaccinations will start until the CDC director signs off. A hearing with the CDC’s independent advisory board is set for Nov. 2; the director is likely to sign off on the panel's recommendations that evening, with vaccinations likely beginning Nov. 3.
-ABC News' Eric M. Strauss
New York City's police department is 80% vaccinated after administering more than 1,000 shots on Thursday.
Nearly all municipal employees, including police officers, sanitation workers and firefighters, have until 5 p.m. Friday to submit proof of receiving at least one dose of vaccine. Those who don't get vaccinated will be placed on unpaid leave, starting Monday, for at least 30 days, and their future employment will be resolved in negotiations with individual labor unions.
Police Commissioner Dermot Shea called reports of nearly half unvaccinated precincts “certainly outdated” and said he's more concerned about filling “individual shifts” than staffing precincts.
"We will move resources around. We have had significant increase in people getting vaccinated in the past three days, and that’s the good news," Shea said on Channel 5. "New Yorkers should not, should not, be worried about this."
The FDNY's vaccination rate stands at 71%. The city's firefighters' unions organized an anti-vaccine mandate rally on Thursday.
-ABC News' Mark Crudele, Aaron Katersky, Meredith Ferrell
