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A map displays data confirmed cases of COVID-19 by zip code. (Illinois Department of Public Health)

The West Ridge neighborhood on Chicago’s North Side has the highest number of confirmed COVID-19 cases in the city, but a cluster of zip codes on the South Side are not far behind, according to newly released data.

New York Times calls jail ‘the largest-known source of U.S. infections’

(WTTW News)

Data released by the Cook County Sheriff’s Office shows 251 detainees have so far tested positive for COVID-19, as have 150 Sheriff’s Office employees. On Sunday, the jail recorded its first virus-related death.

A passenger boards a CTA bus from the rear doors on Thursday, April 9, 2020. (WTTW News)

As the coronavirus continues to spread, the Chicago Transit Authority is announcing additional safety measures for its employees and riders to promote social distancing, including rear-door boarding on buses effective Thursday.

A monarch butterfly on butterfly milkweed. (U.S. Fish and Wildlife Service Midwest Region / Flickr)

The University of Illinois at Chicago will administer a groundbreaking agreement that encourages energy companies and transportation entities, among others, to voluntarily convert right-of-way land to pollinator-friendly habitat.

Watch the April 9, 2020 full episode of “Chicago Tonight.”

The Chicago Park District and the Illinois Soybean Association are partnering on hand sanitizer. (Courtesy of the Chicago Park District)

The Illinois Soybean Association is contributing raw materials and packaging to the Chicago Park District, which is producing 600 gallons of hand sanitizer for its staff and other essential workers.

The 1918 Spanish flu was not even close to being Chicago’s first bout with fast-spreading disease. Geoffrey Baer looks at how Chicago managed a tidal wave of diseases in its earliest years.

New statewide totals: 16,422 cases, 528 deaths

Illinois Gov. J.B. Pritzker announces a shelter-in-place rule to combat the spread of the Covid-19 virus, during a news conference Friday, March 20, 2020, in Chicago. (AP Photo / Charles Rex Arbogast)

Data may show the number of COVID-19 cases in Illinois is growing at a slower pace than some projections had forecast, but Gov. J.B. Pritzker said his stay-at-home order will remain in place through the end of the month.

(WTTW News)

The Cook County sheriff must begin implementing additional sanitation and precaution measures at the jail, but a federal judge rejected calls for the release of large numbers of detainees.

Cook County Board President Toni Preckwinkle speaks with “Chicago Tonight” on Thursday from her Hyde Park home. (WTTW News)

Cook County is bracing for a surge in coronavirus-related deaths. We check in with Cook County Board President Toni Preckwinkle, who is not sick but chose to self-isolate after a member of her security detail contracted the virus.

(WTTW News)

The coronavirus has effectively shut down what locals describe as the world’s largest contiguous LGBTQ neighborhood. How businesses, social service agencies and others are dealing with the pandemic.

(rawpixel / Pixabay)

Whether working from home or reporting from the street, journalists provide information to keep communities safe and healthy. We check in with some members of the local independent media to see how they’re faring with this developing story.

Abbey Baus, a physician assistant and assistant site medical director at Howard Brown Health’s clinic in Lakeview. (WTTW News)

Howard Brown Health’s clinic in Chicago’s Lakeview neighborhood provides a wide range of health care services with a special focus on LGBTQ communities. Like other health care providers, COVID-19 has forced it to make some changes.

Ald. Tom Tunney, 44th Ward, speaks with “Chicago Tonight” on Thursday, April 9, 2020. (WTTW News)

The 44th Ward alderman talks about how the North Side communities he serves, including Boystown and Wrigleyville, are responding to the COVID-19 pandemic.