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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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(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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(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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(Patty Wetli / WTTW News)

Chicago officials will not immediately reimpose an indoor mask mandate because the city’s hospitals are not being strained by the number of people seriously sick with COVID-19.

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Dr. Igor Koralnik, left, examines a patient. (Credit: Northwestern Medicine)

A new Northwestern Medicine study of 52 long haulers, who were not hospitalized and only experienced mild symptoms like cough and sore throat, found that most continued to experience neurologic symptoms, fatigue and compromised quality of life up to 18 months after initial infection. 

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A nurse holds a vial of the Pfizer COVID-19 vaccine for children ages 5 to 11, right, and a vial of the vaccine for adults, which has a different colored label, at a vaccination station in Jackson, Miss., Tuesday, Feb. 8, 2022. (AP Photo / Rogelio V. Solis, File)A nurse holds a vial of the Pfizer COVID-19 vaccine for children ages 5 to 11, right, and a vial of the vaccine for adults, which has a different colored label, at a vaccination station in Jackson, Miss., Tuesday, Feb. 8, 2022. (AP Photo / Rogelio V

The news comes after months of anxious waiting by parents desperate to vaccinate their babies, toddlers and preschoolers, especially as COVID-19 cases once again are rising. 

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(Patty Wetli / WTTW News)

Since May 5, federal health officials have warned all residents of Cook County that they face a “medium” risk of contracting COVID-19. Since then, Chicago health officials have “strongly” urged Chicagoans to wear a mask when they are indoors, particularly in a crowded setting where they are unaware of the vaccination status of those around them.

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The American flag flies at half-staff at the White House in Washington, Thursday, May 12, 2022, as the Biden administration commemorates 1 million American lives lost due to COVID-19. (AP Photo / Susan Walsh)

The coronavirus has killed more than 999,000 people in the U.S. and at least 6.2 million people globally since it emerged in late 2019, according to figures compiled by Johns Hopkins University. Other counts, including by the American Hospital Association, American Medical Association and American Nurses Association, have the toll at 1 million.

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Workers at a drive-up COVID-19 testing clinic stand in a tent as they prepare PCR coronavirus tests, Jan. 4, 2022, in Puyallup, Wash., south of Seattle. (AP Photo / Ted S. Warren, File)

Experts say testing has dropped by 70 to 90% worldwide from the first to the second quarter of this year — the opposite of what they say should be happening with new omicron variants on the rise in places such as the United States and South Africa.

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Dr. Allison Arwady, commissioner of the Chicago Department of Public Health, appears on “Chicago Tonight” on May 9, 2022. (WTTW News)

Chicago, Cook County and several surrounding counties have all recently been designated as being at “medium risk” of their residents contracting COVID-19. 

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(WTTW News)

Residents of seven northeast Illinois counties — McHenry, Lake, Cook, Kendall, DuPage, Will and Grundy — face a medium level of COVID-19 risk, according to the CDC. Dr. Allison Arwady, the commissioner of the Chicago Department of Public Health, said Chicagoans should consider the CDC’s medium level of risk warning as “a yellow light of caution.”

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Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases and chief medical adviser to the president, speaks during a Senate Health, Education, Labor, and Pensions Committee hearing Tuesday, Jan. 11, 2022 on Capitol Hill in Washington. (Greg Nash / Pool via AP)

Dr. Anthony Fauci has given an upbeat assessment of the current state of the coronavirus in the United States, saying the country is “out of the pandemic phase” when it comes to new infections, hospitalizations and deaths, but that it appears to be making a transition to COVID-19 becoming an endemic disease — occurring regularly in certain areas.

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A health worker administers a dose of COVID-19 vaccine during a vaccination clinic in Reading, Pa. (AP Photo / Matt Rourke, File)

COVID-19 vaccinations are at a critical juncture as companies test whether new approaches like combination shots or nasal drops can keep up with a mutating coronavirus — even though it’s not clear if changes are needed.

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(flockine / Pixabay)

Budding plants and blooming trees signal the return of spring, triggering congestion, coughing and sneezing for the millions of seasonal allergy sufferers. With COVID-19 still circulating, how can you tell if your stuffy nose is just a case of hay fever and not something more? Here’s what you need to know.

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(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.

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(WTTW News)

The Illinois Department of Public Health reported just over 1,463 new COVID-19 cases Monday, up from 756 cases a week ago. That’s in comparison to a high of more than 42,903 cases reported on Jan. 7 at the height of omicron.