Lake Effect News has a timeline, details and a photo.
According to a reader with a police scanner, at 4:27pm:
"Person Shot Wilson and Broadway. Possibly one person shot; other reports are saying that there are two people down at Sheridan and Wilson. Confirmed one female shot in the leg."
Update: More from the scanner. "Another person shot in the leg on the 4600 block of Racine. They were picked up by a black SUV. Police are at the hospitals looking for them. Crowd control being implemented at Broadway and Wilson and at Wilson and Sheridan. Possibly more victims based on citizen reports, but police cannot find any more victims. Shell casings found on the east side of the street 4601 Broadway."
Update 2: "The victim is stable and 21 years old. She was taken to Illinois Masonic."
Update 3: ABC7Chicago has a story and photo.