The 3-year-old boy was critically wounded in the Friday night shooting.
The shootings took place Saturday night and Sunday afternoon.
So far 12 people have been shot, seven of them in a shooting that left a 13-year-old boy dead.
The boy was out with his mom about 10:15 p.m. in Brighton Park when he was shot, police said.
Residents living under a new flight path to Midway gave noise commissioners an earful.
The most recent shooting occurred in Old Town in the 400 block of West Blackhawk Street.
Those hurt were among five people shot overnight citywide, two of them fatally, police said.
The two claimed the vests are costumes for movies they're in, and they're security guards, police said.
The public is invited to Thursday's multi-agency Midway noise commission meeting.
The project that started last November is chugging along on schedule to wrap up in December.
The most recent non-fatal shooting took place in Logan Square.
A 30-year-old man was also injured in the shooting early Sunday morning.
Shamiya Adams was on a sleepover with friends when a bullet entered the house and struck her.
The 12-year-old girl is in stable condition after suffering graze wounds in the foot.
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