The Brief Chicago has seen a marked increase in mpox cases reported over the past few months. Mpox, also called monkeypox, is a viral infection that can cause painful and uncomfortable rashes or sores. There has been an increase in mpox cases reported in Chicago over the past few months, according to local health officials. What we know:Since late June, the Chicago Department of Public Health has reported 67 cases of mpox, a period of about three months. What you can do:For more information on mpox, visit the Chicago Department of Public Health’s website.