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Legionella Strikes Again

Following an outbreak in New York City last month, Legionnaires’ disease pops up in Illinois and California. 

Written byJef Akst
| 2 min read

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WIKIMEDIA, ALPHA.PRIMA potentially deadly bacterial infection has struck at least six inmates at San Quentin State Prison in San Rafael, California, just north of San Francisco; dozens of others are exhibiting symptoms, according to SFGate. And in Quincy, Illinois, the same infection has claimed seven lives in a veterans’ home, with nearly 40 others already diagnosed, CNN reported. The culprit: Legionella bacteria, which last month killed a dozen and sickened more than 120 people in New York City (NYC).

Just like the 12 NYC victims, all patients in the Illinois veterans’ home who have died following Legionella infection had underlying medical conditions, according to the state’s Department of Public Health. But city officials suspect that the outbreak of Legionnaires’ disease has already spread throughout the home. “Unfortunately, we expect to see additional cases and possibly additional deaths, because the incubation period for Legionnaires’ disease can be up to two weeks, and because patients with underlying medical conditions are at increased risk of more severe illness,” Illinois Public Health Director Nirav Shah told CNN.

At the northern California prison, one inmate has been taken to a hospital for treatment; the other five who have been diagnosed with Legionnaires’ are being treated in house. Meanwhile, other ...

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Meet the Author

  • Jef (an unusual nickname for Jennifer) got her master’s degree from Indiana University in April 2009 studying the mating behavior of seahorses. After four years of diving off the Gulf Coast of Tampa and performing behavioral experiments at the Tennessee Aquarium in Chattanooga, she left research to pursue a career in science writing. As The Scientist's managing editor, Jef edited features and oversaw the production of the TS Digest and quarterly print magazine. In 2022, her feature on uterus transplantation earned first place in the trade category of the Awards for Excellence in Health Care Journalism. She is a member of the National Association of Science Writers.

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