Watch Chicago Fire Online: Season 8 Episode 4

Did everyone survive the latest #OneChicago crossover?
On Chicago Fire Season 8 Episode 4, a deadly bacteria took its toll on numerous victims around the city.
Chicago's first responders were pushed to their limit as they tried to contain the virus before it was too late.
The CDC arrived on the scene to help resolve the situation in a timely manner.
Meanwhile, a deadly fire at a local university made Severide wonder whether there was more happening than he first thought.
Was there a conspiracy at play here?
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Paul Dailly is the Associate Editor for TV Fanatic. Follow him on Twitter.