The infected mosquitoes were found in the O’Hare and Beverly community areas, according to the Chicago Department of Public Health.

Miami-Dade County Mayor Daniella Levine Cava said 90 deaths have now been confirmed in last month’s collapse of the 12-story Champlain Towers South in Surfside, up from 86 a day before. Some 31 people remain listed as missing.

Pfizer says it plans to meet with top U.S. health officials Monday to discuss the drugmaker’s request for federal authorization of a third dose of its COVID-19 vaccine as President Joe Biden’s chief medical adviser acknowledged that “it is entirely conceivable, maybe likely” that booster shots will be needed.

Over the past year, a small group of people who are homeless have established a tent encampment in a small Avondale park. Similar encampments are all over Chicago, and as Illinois’ eviction moratorium nears its end, the number of unhoused people is expected to grow.

The degenerative brain disease, for which there currently is no cure, takes a terrible toll on both patients and caregivers. By the year 2060, some 3.5 million Latinos are expected to be afflicted with the disease.

Twice a day, every day, for more than two weeks, relatives of those who perished or who are still missing have huddled in the Seaview Hotel ballroom, a new daily routine thrust upon them by an unfathomable disaster.

The acting head of the Food and Drug Administration on Friday called for a government investigation into highly unusual contacts between some of her agency’s drug reviewers and the maker of a controversial new Alzheimer’s drug.

New research from France adds to evidence that widely used COVID-19 vaccines still offer strong protection against a coronavirus mutant that is spreading rapidly around the world and now is the most prevalent variant in the U.S.

The global death toll from COVID-19 eclipsed 4 million Wednesday as the crisis increasingly becomes a race between the vaccine and the highly contagious delta variant.

Surging COVID-19 cases in Tokyo have hit a two-month high that almost guarantees the Japanese government will declare a new state of emergency to start next week and continue for the duration of the Tokyo Olympics.

Emergency workers gave up Wednesday on any hope of finding survivors in a collapsed Florida condo building, telling sobbing families that there was “no chance of life” in the rubble as crews shifted their efforts to recovering more remains.

State employees who work in direct care facilities and have received at least one dose of the COVID-19 vaccine are eligible to receive cash bonuses and prizes like airline vouchers and tickets to Cubs and Bears games, Gov. J.B. Pritzker announced Wednesday.

The delta variant, a more transmissible and possibly more dangerous strain of coronavirus, now makes up more than half of all new COVID-19 infections in the U.S., according to estimates from the U.S. Centers for Disease Control and Prevention.

Officials overseeing the search at the site of the Florida condominium collapse sounded increasingly somber Tuesday about the prospects for finding anyone alive, saying they have detected no new signs of life in the rubble as the death toll climbed to 36.

The pressure of hosting an Olympics during a still-active pandemic is beginning to show in Japan. The games begin July 23, with organizers determined they will go on, even with a reduced number of spectators or possibly none at all.

Rescuers were given the all-clear to resume work looking for victims at a collapsed South Florida condo building after demolition crews set off a string of explosives that brought down the last of the building in a plume of dust.