Health officials said that one death and nearly two dozen hospitalizations are tied to a new listeria outbreak of unknown origin.
The Centers for Disease Control and Prevention has not identified a food that might be spreading the deadly bacteria, but officials said the public should be alert to symptoms and the possibility of infection.
Those symptoms include fever, muscle aches, nausea, and diarrhea.
CDC officials said nearly all the 23 people known to have been infected in the outbreak either live in or traveled to Florida about a month before they got sick, The Associated Press reported.
Listeria is one of the most dangerous forms of food poisoning, and 22 of the infected people were hospitalized.
One person from Illinois died and one pregnant woman lost her fetus, the CDC said.
Listeria can be treated with antibiotics, but it is especially dangerous to pregnant women, newborns, the elderly, and those with compromised immune systems.