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In this June 11, 2021, file photo, customers wear face masks in an outdoor mall with closed business amid the COVID-19 pandemic in Los Angeles. (AP Photo / Damian Dovarganes, File)

The latest alarming coronavirus variant is exploiting low global vaccination rates and a rush to ease pandemic restrictions, adding new urgency to the drive to get more shots in arms and slow its supercharged spread.

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(Source: Our World In Data)

About 46% of the United States’ population is fully vaccinated, but many countries have much lower rates. What the U.S. and other countries are doing to promote vaccine equity across the world.

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(WTTW News)

The more transmissible delta variant is expected to become the dominant coronavirus strain in the U.S., the director of the Centers for Disease Control and Prevention said. And with half the U.S. still not fully vaccinated, doctors say it could cause a resurgence of COVID-19 in the fall.

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(WTTW News)

The Centers for Disease Control and Prevention says the agency is tracking the Delta coronavirus variant, among others — and warned that there is a small chance a fully vaccinated person could still get infected if they’re exposed.

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Karen McKnight stands in her backyard on Saturday, June 19, 2021, in Sammamish, Wash., holding two books written by her brother Ross Bagne of Cheyenne, Wyo. Nearly all COVID-19 deaths in the United States now are in people who weren’t vaccinated, like Bagne, a staggering demonstration of how effective the vaccines have been (AP Photo / John Froschauer)

Nearly all COVID-19 deaths in the U.S. now are in people who weren’t vaccinated, a staggering demonstration of how effective the shots have been and an indication that deaths per day — now down to under 300 — could be practically zero if everyone eligible got the vaccine.

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(WTTW News)

A study analyzing whether the COVID-19 vaccine prevents infection and spread of the coronavirus among college students has been expanded to include adults ages 18-29, including those who choose not to get vaccinated.

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(Courtesy of Chicago Fire Media)

Chicagoans ages 12 and up who choose to get vaccinated at home will get their shot for free and a $50 gift card from food delivery company GrubHub, officials said.

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In this June 18, 2021 file photo, President Joe Biden speaks about COVID-19 vaccination shots, in the State Dining Room of the White House in Washington. (AP Photo / Evan Vucci)

The U.S. government is stepping up efforts to get younger Americans vaccinated for COVID-19 as concerns grow about the spread of a new variant that threatens to set the country back in the months ahead.

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(AP Illustration / Peter Hamlin)

The short answer: It’s likely safe and effective, but researchers are still gathering data to be sure.

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Gov. J.B. Pritzker receives the Johnson & Johnson COVID-19 vaccine on Wednesday, March 24, 2021 at a mass vaccination site in Springfield. (WTTW News)

Every Illinois resident who has gotten at least one dose of a COVID-19 vaccine will be eligible to win one of 43 cash prizes — including three million-dollar jackpots — and 20 scholarship awards starting July 8, Gov. J.B. Pritzker announced Thursday. 

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In this May 12, 2021, file photo, one man holds the door for another as they arrive at a COVID-19 vaccination clinic at the Auburn Mall in Auburn, Maine. (AP Photo / Robert F. Bukaty)

As cases tumble and states reopen, the potential final stage in the U.S. campaign to vanquish COVID-19 is turning into a slog, with a worrisome variant gaining a bigger foothold and lotteries and other prizes failing to persuade some Americans to get vaccinated.

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In this Wednesday, Oct. 7, 2020, file photo, a vial of the Phase 3 Novavax coronavirus vaccine is seen ready for use in the trial at St. George's University hospital in London. (AP Photo / Alastair Grant, File)

The Novavax vaccine, which is easy to store and transport, is expected to play an important role in boosting vaccine supplies in the developing world.

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(AP Illustration / Peter Hamlin)

Temporary side effects including headache, fatigue and fever are signs the immune system is revving up – a normal response to vaccines. And they’re common.

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President Joe Biden and British Prime Minister Boris Johnson visit during a bilateral meeting ahead of the G-7 summit, Thursday, June 10, 2021, in Carbis Bay, England. (AP Photo / Patrick Semansky)

Leaders from the Group of Seven industrialized nations are set to commit at their summit to sharing at least 1 billion coronavirus shots with struggling countries around the world — half the doses coming from the U.S. and 100 million from the U.K.

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(WTTW News)

All businesses will be allowed to operate at full capacity and gatherings of all sizes will be permitted, according to the new rules.

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(WTTW News)

The Centers for Disease Control and Prevention reports the COVID-19 vaccine can cause swelling in the lymph nodes in the underarm where women received the shot, which the agency says is normal. But that swelling can appear in mammograms. Here’s what you need to know.