The respiratory illness RSV (RSV) is still active in Chicago, according to the Chicago Department of Public Health. This is an unusually late showing for the virus, which can strike infants particularly hard. Despite this, RSV activity in Chicago has remained high, with the state as a whole experiencing moderate state-level activity. So far, two children with RSV have died this season in Chicago. The rise in RSV protection rates for babies born between 2023 and 2024 has been seen in Chicago since the products were approved, with about 17% of Chicago infants immunized due to immunization or receiving monoclonal antibodies. The CDC estimates that each year, about 2% to 3% of babies younger than 3 months old are hospitalized with RSVS. The American Academy of Pediatrics recommends that pregnant women receive an RSV vaccine from weeks 32 through 36 of their pregnancies, which may help protect their babies after they're born.