One of those transports, from the 1st District police station near 17th and State streets in the South Loop, was a child.
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Several emergency crews were on the scene.
There are several tents set up outside, with dozens of migrants walking around the area.
Crews were called for a report of multiple sick people at the police station.
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Five ambulances were requested.
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At least one person can be seen on video being placed on a stretcher and taken into an ambulance.
It's unclear what kind of illness they may have.
As of Monday, there are 11,737 migrants in city shelters, 3,116 awaiting placement, 2,509 in CPD districts and 607 waiting at O'Hare.