A sign for the Food and Drug Administration is seen in Silver Spring, Md., on Thursday, Dec. 10, 2020. (AP Photo / Manuel Balce Ceneta)

The InspectIR COVID-19 Breathalyzer is about the size of a piece of carry-on luggage, the FDA said, and can be used in doctor’s offices, hospitals and mobile testing sites. 

(AP Illustration / Peter Hamlin)

Since it was first identified in November, BA.2 has been spreading around the globe, driving new surges in parts of Asia and Europe. It’s now the dominant coronavirus version in the U.S. and more than five dozen other countries.

President Joe Biden signs the Postal Service Reform Act of 2022 in the State Dining Room at the White House in Washington, April 6, 2022. Watching from left are Rep. Stephen Lynch, D-Mass., Sen. Tom Carper, D-Del., Rep. Carolyn Maloney, D-N.Y., Sen. Gary Peters, D-Mich., Senate Majority Leader Chuck Schumer of N.Y., Sen. Rob Portman, R-Ohio, House Speaker Nancy Pelosi of Calif., Rep. James Clyburn, D-S.C., Rep. Steny Hoyer, D-Md., Annette Taylor, Rep. James Comer, R-Ky., and Rep. Brenda Lawrence, D-Mich. (A

House Speaker Nancy Pelosi received a positive test result for COVID-19 and is currently asymptomatic, her spokesman Drew Hammill said Thursday in a tweet. He said she had tested negative earlier in the week.

(Patty Wetli / WTTW News)

Top Chicago public health officials say that the BA.2 omicron subvariant will be making up most of Chicago cases by the end of the month.

(Jakayla Toney / Unsplash)

Illinois will close its community, free COVID-19 testing sites within the next week. The Illinois Department of Public Health cites a “sharp increase in demand” that dropped “precipitously in recent weeks” as its reason for closing the testing locations, as well as an “anticipated end of federal funding.”

Two people wearing masks walk in Regents Park in London, Monday, March 23, 2020. (AP Photo / Frank Augstein, File)

There were more than 12 million new weekly cases and just under 33,000 deaths, a 23% decline in mortality, according to the U.N. health agency’s report on the pandemic issued late Tuesday.

A woman wearing a face mask rides on a tram in Hong Kong, Wednesday, March 16, 2022. (AP Photo / Kin Cheung)

In the U.N. health agency’s weekly report on the pandemic issued late Tuesday, WHO said there were more than 11 million new COVID-19 infections last week — about an 8% rise — and 43,000 new deaths. The number of COVID-19 deaths globally has been dropping for the past three weeks.

(HeartlandMom / Pixabay)

According to a November study, researchers estimate that anywhere from 700,000 to 1.6 million people in the U.S., are currently experiencing chronic smell loss or distortion because of COVID-19. For several Chicago-area residents, the loss persists. 

The red-yellow regions are the parts of the brain that shrink the most in the 401 SARS- CoV-2 infected participants, compared with the 384 non-infected participants. (Credit: G. Douaud, in collaboration with Anderson Winkler and Saad Jbabdi, University of Oxford and NIH via CNN)

The study, published Monday in the journal “Nature,” is believed to be the largest of its kind. It found that the brains of those who had COVID-19 had a greater loss of grey matter and abnormalities in the brain tissue compared with those who didn’t have COVID-19. 

A worker handles a coronavirus test sample at a private testing site in Beijing, Wednesday, Jan. 26, 2022. (AP Photo / Mark Schiefelbein, File)

The milestone is the latest tragic reminder of the unrelenting nature of the pandemic even as people are shedding masks, travel is resuming and businesses are reopening. The death toll, compiled by Johns Hopkins University, stood at 5,996,882 as of Sunday morning and was expected to pass the 6 million mark later in the day.

(WTTW News)

Cook County is now at the lowest level of COVID-19 risk, under new guidance set by the Centers for Disease Control and Prevention.

COVID-19 saliva tests are organized at a SHIELD Illinois testing facility in North Chicago. (WTTW News)

The unique saliva test was developed by University of Illinois scientists and SHIELD officials say it has become an essential tool in halting the spread of COVID-19.

Customers eat at the Reading Terminal Market in Philadelphia, Wednesday, Feb. 16, 2022. (AP Photo / Matt Rourke)

Centers for Disease Control and Prevention Director Dr. Rochelle Walensky said during a White House briefing that the government is contemplating a change to its mask guidance in the coming weeks.

Ray Hoffman, right, who is immune-compromised, is given a shot of the two-shot dose of AstraZeneca’s Evusheld — the first set of antibodies grown in a lab to prevent COVID-19, Thursday, Jan. 20, 2022, by Jose Lazaro, center, a medical assistant at a University of Washington Medicine clinic in Seattle as Cynde Wiederhold, left, a nurse, looks on. (AP Photo / Ted S. Warren)

Up to 7 million immune-compromised Americans have been left behind in the nation’s wobbly efforts to get back to normal. Not only do these fragile patients remain at high risk of severe illness and death from COVID-19, they can harbor lengthy infections that can help spark still more variants.

(WTTW News)

“A swift return to in-person instruction gives faculty and students the best opportunity to teach and learn — and thrive amid their school community,” CPS CEO Pedro Martinez said Monday.

(WTTW News)

CPS has been criticized in recent days for not telling students and families that it changed the way positive cases among students and staff are reported on its online dashboard.