The death of a Chicago woman has led to a nationwide investigation of the coronawave, coronaviruses and the city’s air quality, the mayor said Thursday.

The mayor’s office said in a statement that Dr. Joseph L. Kagan, an epidemiologist for the U.S. Centers for Disease Control and Prevention, will lead the investigation.

The U.P.C. will be reviewing all coronaviral-related deaths in Chicago, the city said.

The office said the investigation will include an analysis of whether the city was properly monitoring and controlling the coronas.

The investigation is focused on the city, the UPMC and other health agencies.

Chicago is the largest U.s. city with a population of about 50 million.

The death was the second in as many weeks for the city.

On Monday, a woman died in an apparent road crash in the Englewood neighborhood.

The driver of a pickup truck was hospitalized after the crash, which was under investigation, the Cook County medical examiner’s office confirmed.

On Wednesday, the death of the man who died from the virus in a vehicle near a grocery store near the city limits was also under investigation.

A man and a woman were hospitalized after contracting the virus while traveling on Interstate 94 near the Chicago suburb of Oak Park.

On Thursday, a man died of the virus after being infected with the virus at a Chicago park.

The Chicago Department of Public Health said in an update that tests on the man, who was treated at a hospital and released, and the woman who was hospitalized in the early hours of Thursday morning were negative.

The man was also the first person to test positive for the virus.

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