Dr. Allison Arwady appears on "Chicago Tonight" on Oct. 18, 2022. (WTTW News)
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During his campaign for mayor, Brandon Johnson promised to fire Chicago Department of Public Health Commissioner Dr. Allison Arwady, and Friday night, he did just that — setting off a wave of recriminations and outrage.

Dr. Allison Arwady appears on "Chicago Tonight" on March 20, 2023. (WTTW News)
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Dr. Allison Arwady was the public face of Chicago’s response throughout the COVID-19 pandemic. At the height of the pandemic, she hosted online question-and-answer sessions twice a week and frequently briefed the news media.

(WTTW News)

Local public health departments are continuing to monitor COVID-19 levels in the area as the U.S. sees a late-summer uptick in test positivity and hospitalizations.

(WTTW News)
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A decade-long push to reopen public mental health clinics closed in 2011 and expand efforts to respond to 911 calls for help not with police officers but with social workers and counselors was center stage at City Hall Monday.

Metal scrap. (Public Domain Pictures / Pixabay)
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The failure likely sent hundreds of thousands of tons of concrete, wood, brick, metal and glass into landfills that could have been reused or recycled, according to the audit by the city’s watchdog.

Migrants in Chicago are pictured in a file photo. (WTTW News)

As part of the city’s response, police stations have become makeshift shelters for new migrants before they transition into long-term housing. Recently, a volunteer team of medical students has begun making the rounds at those police stations to assist with refugees’ health needs. 

(Pixabay)

Chicago is one of 18 cities chosen for the Heat Watch Campaign, which will map the city's urban heat islands — places with fewer trees and more pavement, where temperatures can soar 20 degrees higher than surrounding areas.

This electron microscope image shows mature, oval-shaped mpox virions, left, and spherical immature virions, right, from a human skin sample associated with a 2003 prairie dog outbreak. (Cynthia S. Goldsmith, Russell Regnery / CDC)

Officials with the Chicago Department of Public Health have documented 29 cases of the virus that can cause intensely painful lesions between April 22 and Tuesday, after recording just five cases between Jan. 1 and April 15, according to city data.

(WTTW News)

Recently, a young child was poisoned in his Belmont-Cragin apartment and now faces a host of health problems. It’s spurred a debate on whether the city can do more to fix the problem before another child is affected. 

Dr. Allison Arwady, commissioner of the Chicago Department of Public Health, appears on "Chicago Tonight" on March 20, 2023. (WTTW News)

Throughout the pandemic, Dr. Allison Arwady, commissioner of the Chicago Department of Public Health, led Chicago’s effort to fight the deadly virus. On this third anniversary of the pandemic, Arwady reflects on lessons learned and whether she would have done anything differently. 

Jedi Rucizka, 2, of Chicago, was hospitalized for lead poisoning. (WTTW News)

Paint containing lead has been outlawed in Chicago since 1978, but a WTTW News investigation has found the vast majority of Chicago’s housing stock still contains potentially toxic levels of the substance.

This electron microscope image shows mature, oval-shaped monkeypox virions, left, and spherical immature virions, right, from a human skin sample associated with a 2003 prairie dog outbreak. (Cynthia S. Goldsmith, Russell Regnery / CDC)

The two people — about whom no other information was shared — both had underlying health conditions, including weakened immune systems, and were diagnosed with the virus more than six weeks ago, officials said.

(WTTW News)

HIV diagnoses in Chicago during 2020 were the lowest reported since 1987, according to the Chicago Department of Public Health’s latest HIV/STI data report.

(WTTW News)

Chicago Department of Public Health Commissioner Dr. Allison Arwady urged all Chicagoans older than 12 who were vaccinated against COVID-19 with the original vaccine at least two months ago to get the updated vaccine, which targets the BA.4 and BA.5 subvariants of the omicron variant of COVID-19. 

(WTTW News)

Dr. Allison Arwady, commissioner of the Chicago Department of Public Health, called the vaccines the “best possible match” against strains of the virus now in circulation. They’ve been formulated to provide immunity against the omicron variants BA.4 and BA.5, which account for nearly all of the cases of COVID-19 in the U.S.

Dr. Allison Arwady, the commissioner of the Department of Public Health, addresses the news media on Wednesday Jan. 19, 2021. (Chicago's Mayor's Office)
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Chicago Department of Public Health Commissioner Dr. Allison Arwady, who has been the public face of Chicago’s response throughout the continuing COVID-19 pandemic as well as the outbreak of monkeypox, said she would work from home while isolating.