(CNN) — Arizona reported its fourth death from the H1N1 virus, commonly known as swine flu, health officials said Wednesday.

The victim was the second child in the Pima County area to die of flu complications, health officials said. The age of child who died Wednesday was not released, but the patient’s health was “medically compromised.”

Earlier, officials in Cook County, Illinois, recorded their second death from H1N1. The latest victim, from suburban Chicago, died within the past couple of days and had “significant underlying medical conditions,” said spokeswoman Kelly Jakubek.

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