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President Joe Biden receives a COVID-19 booster shot during an event in the South Court Auditorium on the White House campus, Monday, Sept. 27, 2021, in Washington. (AP Photo / Evan Vucci)

President Joe Biden received his COVID-19 booster shot on Monday, days after federal regulators recommended a third dose of the Pfizer vaccine for Americans age 65 or older and approved them for others with preexisting medical conditions and high-risk work environments.

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(WTTW News)

Echoing recommendations from the Centers for Disease Control and Prevention, Illinois health officials are recommending COVID-19 booster shots for older adults, as well as front-line workers and people who live in group settings.

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In this Jan. 8, 2021, file photo, a pharmacist prepares a syringe of the Pfizer vaccine for COVID-19, at Queen Anne Healthcare, a skilled nursing and rehabilitation facility in Seattle. (AP Photo / Ted S. Warren, File)

The Centers for Disease Control and Prevention on Thursday endorsed booster shots for millions of older or otherwise vulnerable Americans, opening a major new phase in the U.S vaccination drive against COVID-19.

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(WTTW News via CNN)

The mayor’s latest push for vaccinations invokes the city’s 77 community areas to encourage Chicagoans from all neighborhoods to get vaccinated — and to enlist those who have already been jabbed with the lifesaving vaccine to help others follow their lead.

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In this Sept. 14, 2021, file photo, a syringe is prepared with the Pfizer COVID-19 vaccine at a clinic at the Reading Area Community College in Reading, Pa. (AP Photo / Matt Rourke)

The U.S. moved a step closer Wednesday to offering booster doses of Pfizer’s COVID-19 vaccine to senior citizens and others at high risk from the virus as the Food and Drug Administration signed off on the targeted use of extra shots.

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Mayor Lori Lightfoot speaks at the New Life Church on Monday, April 5, 2021. (WTTW News)

The mayor said Wednesday she would not delay her order to require all city workers to be vaccinated against COVID-19 by Oct. 15 — despite pushback from the unions representing Chicago’s 11,000 police officers.

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Hospitals in southern Illinois are facing a critical shortage of available ICU beds. (WTTW News)

Hospitals in parts of the state are facing a critical shortage of available beds in their intensive care units. The highly contagious delta variant of COVID-19, combined with low vaccination rates, has created an overwhelming situation for medical providers for the last month.

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In this March 26, 2021, file photo a member of the Philadelphia Fire Department prepares a dose of the Johnson & Johnson COVID-19 vaccine at a vaccination site setup in Philadelphia. (AP Photo / Matt Rourke, File)

Johnson & Johnson said Tuesday that a booster of its one-shot coronavirus vaccine provides a stronger immune response months after people receive a first dose.

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People dine out in Chicago on June 1, 2021. (WTTW News)

Heading out to a bar, restaurant or theater in Chicago? You may be asked to show proof of vaccination against COVID-19. Proof is not required — and a coalition of restaurateurs say it shouldn’t ever be. But a group of City Council members have a different view.

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In this Dec. 15, 2020, file photo, a droplet falls from a syringe after a person was injected with the Pfizer COVID-19 vaccine at a hospital in Providence, R.I. (AP Photo / David Goldman, File)

Pfizer said Monday its COVID-19 vaccine works for children ages 5 to 11 and that it will seek U.S. authorization for this age group soon — a key step toward beginning vaccinations for youngsters.

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In this March 2, 2021, file photo, Hollie Maloney, a pharmacy technician, loads a syringe with Pfizer's COVID-19 vaccine at the Portland Expo in Portland, Maine. (AP Photo / Robert F. Bukaty, File)

An influential federal advisory panel has overwhelmingly rejected a plan to give Pfizer booster shots against COVID-19 to most Americans, but it endorsed the extra shots for those who are 65 or older or run a high risk of severe disease.

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(WTTW News via CNN)

Bipartisan legislation to be introduced Friday by U.S. Rep. Bobby Rush would honor those whose efforts led to the successful development of COVID-19 vaccines, including researchers, scientists, doctors and vaccine trial volunteers. 

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(WTTW News)

Chicago officials will expand their efforts to bring lifesaving vaccines directly to those who have yet to be vaccinated by going door-to-door in more parts of the city while launching an effort to contact unvaccinated residents by phone.

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A syringe is prepared with the Pfizer COVID-19 vaccine at a clinic at the Reading Area Community College in Reading, Pa., Tuesday, Sept. 14, 2021. (AP Photo / Matt Rourke)

Influential government advisers will debate Friday if there’s enough proof that a booster dose of Pfizer’s COVID-19 vaccine is safe and effective — the first step toward deciding which Americans need one and when.

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In this Sept. 14, 2021, file photo, a syringe is prepared with the Pfizer COVID-19 vaccine at a clinic at the Reading Area Community College in Reading, Pa. (AP Photo / Matt Rourke, File)

COVID-19 deaths and cases in the U.S. have climbed back to where they were over the winter, wiping out months of progress and potentially bolstering President Joe Biden’s argument for his sweeping new vaccination requirements. 

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(WTTW News)

The mandate is intended to push about two-thirds of American workers to get vaccinated, but some are claiming it's government overreach.