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A health worker administers a dose of a COVID-19 vaccine during a vaccination clinic at the Keystone First Wellness Center in Chester, Pa., on Dec. 15, 2021.  (AP Photo / Matt Rourke, File)

Pfizer and Moderna tested shots updated to better match the omicron that surged over the winter, but that first mutant has disappeared — replaced by its genetically distinct relatives. The two newest omicron cousins, called BA.4 and BA.5, together now make up half of U.S. cases, according to the Centers for Disease Control and Prevention.

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(Patty Wetli / WTTW News)

One week ago, federal officials lowered the risk warning level to high for Cook County. But even as confirmed cases of COVID-19 continued to drop, hospitalizations rose just enough across Cook County to trigger an increase in the warning level by federal officials.

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Cook County President Toni Preckwinkle announces the launch of the Building Healthy Communities initiative Tuesday, April 12, 2022. (WTTW News)

Cook County budget officials will only have to close an $18.2 million budget shortfall in 2023, the smallest gap in a decade, avoiding tax hikes and layoffs. Thebudget has been boosted by sales taxes, corporate income taxes and revenue generated by the construction boom. 

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(CNN)

Within days of the U.S. Food and Drug Administration and the Centers for Disease Control approving vaccine courses for children six-months through 4 years old, area hospitals, pediatricians and health care centers are beginning to put those doses in children’s arms.

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(Credit: American Red Cross)
Factors out of most people’s reach have caused everything from high gas prices to shortages of products like baby formula and tampons. But there is another shortage that we can do something about: it’s the supply of blood that hospitals and their patients depend on daily. 
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(WTTW News)

Officials granted double the number of COVID-19 vaccine exemptions to members of the Chicago Police Department than they did to members of any other city department, according to a WTTW News analysis of data provided by the mayor’s office.

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This May 2022 photo provided by Pfizer shows production of the Pfizer's COVID-19 vaccine for children under 5 in Puurs, Belgium. U.S. regulators on Friday, June 17, authorized the first COVID-19 shots for infants and preschoolers, paving the way for vaccinations to begin next week. (Pfizer via AP)

Roughly 18 million kids will now be eligible for COVID-19 vaccines, but it remains to be seen how many will ultimately get the vaccines. Less than a third of children ages 5 to 11 have done so since vaccination opened up to them last November.

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Syringes and colorful bandages are prepared as children from local schools prepare to get COVID-19 vaccines in Pittsfield, Mass., on Monday Dec. 13, 2021. (Ben Garver / The Berkshire Eagle via AP, File)

U.S. regulators on Friday authorized the first COVID-19 shots for infants and preschoolers, paving the way for vaccinations to begin next week.

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(Patty Wetli / WTTW News)

COVID-19 posed a high risk in Chicago and Cook County for 21 days, but neither state, county nor city officials imposed new restrictions designed to prevent the spread of COVID-19. Chicagoans should consider the CDC’s medium level of risk warning as “a yellow light of caution,” Dr. Allison Arwady has said.

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A boy receives a dose of China's Sinovac COVID-19 coronavirus vaccine at a community vaccination center in Hong Kong on Feb. 25, 2022. (AP Photo / Kin Cheung, File)

The Food and Drug Administration’s vaccine advisers gave a thumbs-up to vaccines from Moderna and Pfizer for the littlest kids.

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(WTTW News)

Even as COVID-19 case numbers increased in recent weeks after an early spring lull, Lightfoot said she has no intention of returning to remote learning when classes resume in August.

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Baby formula is displayed on the shelves of a grocery store in Carmel, Ind. on May 10, 2022. (AP Photo / Michael Conroy, File)

U.S. regulators have historically inspected baby formula plants at least once a year, but they did not inspect any of the three biggest manufacturers in 2020, according to federal records reviewed by The Associated Press.

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Syringes and colorful bandages are prepared as children from local schools prepare to get COVID-19 vaccines in Pittsfield, Mass., on Monday Dec. 13, 2021. (Ben Garver / The Berkshire Eagle via AP, File)

Federal health officials said Sunday that kid-sized doses of Pfizer’s COVID-19 vaccines appear to be safe and effective for kids under 5, a key step toward a long-awaited decision to begin vaccinating the youngest American children.

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Passengers get a COVID-19 test at Heathrow Airport in London, Nov. 29, 2021. (AP Photo / Frank Augstein, File)

The Biden administration is lifting its requirement that international air travelers to the U.S. take a COVID-19 test within a day before boarding their flights, easing one of the last remaining government mandates meant to contain the spread of the coronavirus.

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A worker in protectively overalls and carrying disinfecting equipment walks outside the Wuhan Central Hospital, China on Feb. 6, 2021. (AP Photo / Ng Han Guan, File)

That stance marks a sharp reversal of the U.N. health agency’s initial assessment of the pandemic’s origins. WHO concluded last year that it was “extremely unlikely” COVID-19 might have spilled into humans from a lab.

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Prepared Pfizer COVID-19 vaccine syringes for children ages 5 to 11 and adults are displayed on a table at Northwest Community Church in Chicago, Dec. 11, 2021.  (AP Photo / Nam Y. Huh, File)

White House COVID-19 coordinator Ashish Jha outlined the administration’s planning for the last remaining ineligible age group to get shots. He said the Food and Drug Administration’s outside panel of advisers will meet on June 14-15 to evaluate the Pfizer and Moderna shots for younger kids.