For example, the study is comparing the 60612 ZIP code, which includes the Near West Side and had an infection rate exceeding 1,000 cases per 100,000 people, to 60622, which includes Ukrainian Village and had an infection rate below 644 per 100,000. Researchers will also collect web-based surveys of the participants and analyze other data.
Why does one Chicago ZIP code have more COVID-19 cases than the next? Finger-prick blood tests may help find an answer.

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