
Health officials hoped to avoid another large wave of COVID-19 infections this year thanks to updated vaccines. But that optimism may be starting to fade with the changing seasons.
Only about 144,000 Chicagoans have received an updated COVID-19 booster as of Oct. 5, according to the latest numbers from the city’s public health department — that’s less than 10% of the nearly 2 million people eligible for the reformulated vaccine that was designed to protect against Omicron subvariants.