With more than half the world still not vaccinated, the virus will likely keep finding people to infect and replicating inside them for several months or years to come.  And each time a virus makes a copy of itself, a small mutation could occur. 

The coronavirus has become the leading cause of death for officers despite law enforcement being among the first groups eligible to receive the vaccine at the end of 2020.

The final report from former Inspector General Joseph Ferguson did not detail why he concluded that the three employees should be disciplined, or whether city leaders would follow his recommendations.

With Halloween and Día de los Muertos fast approaching, state health officials released guidelines Friday to help people safely celebrate common fall traditions, like trick-or-treating and visits to pumpkin patches.

Fraternal Order of Police President John Catanzara's actions and rhetoric "threatens the health and safety of Chicago’s residents and first responders," Mayor Lori Lightfoot said.

Chicago Public Schools CEO Pedro Martinez said those staffers who are not fully vaccinated by Friday’s deadline must consent to weekly testing, but will not be immediately barred from working, as had previously been threatened.

Beleaguered business owners and families separated by COVID-19 restrictions rejoiced Wednesday after the U.S. said it will reopen its land borders to nonessential travel next month, ending a 19-month freeze.

While COVID-19 cases and hospitalizations have dropped nationally, a local infectious disease expert says the situation is a little more complex than whether or not the nation is reaching herd immunity.

“Although we are already into fall, we are expecting a warm weekend and West Nile virus remains a risk until the first hard frost,” Illinois Department of Public Health Director Dr. Ngozi Ezike said in a statement. 

But with a week to go until her declared deadline, Mayor Lori Lightfoot stepped back and said she would not discipline unvaccinated employees. 

When COVID-19 vaccines were first rolling out in the U.S., the Centers for Disease Control and Prevention recommended waiting 14 days between the shots and other immunizations as a precaution. But the agency has since revised its guidelines and says the wait is unnecessary.

President Joe Biden on Thursday championed COVID-19 vaccination requirements, determined that the roughly 67 million unvaccinated American adults must get the shot even as he acknowledged that mandates weren’t his “first instinct.”

Pfizer asked the U.S. government Thursday to allow use of its COVID-19 vaccine in children ages 5 to 11 – and if regulators agree, shots could begin within a matter of weeks.

Provisional data from the CDC’s National Center for Health Statistics, released early Wednesday, suggest the homicide rate for the United States rose 30% between 2019 and 2020. 

For women in the U.S., breast cancer is devastatingly common, with one in eight expected to develop the disease over the course of their lifetimes. And for Black women in the U.S., what comes after the diagnosis is especially worrying.

The commissioner of the Chicago Department of Water Management told members of the City Council that it was “quite impressive” that city crews had replaced 10 of the approximately 400,000 lead service lines responsible for contaminating Chicagoans’ tap water in 13 months.