When the temperature heats up, so do emergency rooms, according to a massive study of Chicago hospital and urgent care records.

Dr. Garth Walker assumed the role of Chicago Department of Public Health commissioner this month after he was appointed by Mayor Brandon Johnson and unanimously confirmed by the Chicago City Council in July.

The executive order recommends splitting the measles, mumps and rubella, or MMR, vaccine into three separate shots and reducing the number of vaccines recommended for all children from 18 to 11.

These are the first U.S. deaths from measles reported in 2026 and the first in Pennsylvania in 35 years.

The Federal Aviation Administration has acknowledged that aircrews are exposed to ionizing radiation, but the government does not set federal dose limits or require monitoring.

The Chicago Transit Authority’s board of directors approved an array of new efforts aimed at aiding passengers who need shelter or healthcare, as well as new crisis and community violence intervention programs.

The Illinois Department of Public Health said that it does not recommend adjustments to the childhood immunization schedule based on the recent federal executive order and that the department continues to endorse the immunization schedule put forth by the American Academy of Pediatrics.

Across two hospitals, 16 community health centers and Cook County Jail, Cook County Health aims to provide healthcare to patients, regardless of their ability to pay. But with federal policy changes looming, the health system’s budget is facing new challenges.

The vaccine, called mFLUSIVA, is expected to be a versatile new option for people seeking protection from influenza and an important step forward for the widespread adoption of mRNA technology. 

Public health experts have raised concerns that spacing out shots as the president suggests can lead to an increased risk that children become infected with a vaccine-preventable disease before returning for another visit.

The Chicago Park District is extending the outdoor pool season at select locations across the city.

At least 345 people in 27 states have been reported getting sick from the salmonella strain linked to the jalapeños. Most have been in Minnesota and Colorado. No deaths have been reported, but officials say 36 people have been hospitalized.

Dr. Anthony Fauci is sitting before Congress, Robert F. Kennedy Jr. is on TV debating COVID lockdowns and Americans can’t agree on what science to trust. You might think it’s 2020 again.

Flu vaccines must be updated annually to best match circulating strains of the virus. Vaccines made with the Nobel Prize-winning mRNA technology are faster to manufacturer than other types.

The FDA says it is tracking five separate ongoing cyclospora outbreaks. The 15-state outbreak is by far the largest. No products have been linked to the other outbreaks, including one that has sickened 115 people.

Dr. Erica Schwartz becomes the 22nd leader of the CDC, which is charged with protecting Americans from preventable health threats. Her resume includes medical and law degrees, a stint as deputy surgeon general, and a leadership position at the U.S. Coast Guard.