CDC Investigation Notice: CDC Investigates New Listeria Outbreak

People at high risk should seek health care if symptomatic.

Media Statement

For Immediate Release: Friday, July 1, 2022
Contact: Media Relations
(404) 639-3286

A CDC Investigation Notice regarding a multistate outbreak of Listeria infections has been posted: Listeria Outbreak | CDC.Listeria Outbreak | CDC

Key points:

  • 23 people infected with the outbreak strain have been reported from 10 states. Nearly all the people live in or traveled to Florida about a month before they got sick, although the significance of this is not yet known.
  • 22 people have been hospitalized and one death has been reported from Illinois.
  • Five people got sick during their pregnancy, and one illness resulted in a fetal loss.
  • A specific food item has not yet been identified as the source of this outbreak.
  • Pregnant people and their newborns, adults aged 65 and older, and people with weakened immune systems are at higher risk for severe Listeria
  • CDC is advising people at high risk who have symptoms of a Listeria infection, especially those who have recently traveled to Florida, to talk to their healthcare provider. Healthcare providers should report listeriosis illnesses to their health department. This information may help investigators solve this outbreak.

About Listeria:

  • Listeria can cause severe illness (known as invasive listeriosis) when the bacteria spread beyond the gut to other parts of the body.
  • Pregnant people typically experience only fever, fatigue, and muscle aches. However, Listeria infection during pregnancy can lead to miscarriage, stillbirth, premature delivery, or life-threatening infection of the newborn.
  • People who are not pregnant may experience headache, stiff neck, confusion, loss of balance, and convulsions, in addition to fever and muscle aches.
  • Symptoms of severe illness usually start within two weeks after eating food contaminated with Listeria but may start as early as the same day or as late as 70 days after.

If you have questions about cases in a particular state, please call that state’s health department.

Thank you,

CDC News Media Branch


CDC works 24/7 protecting America’s health, safety and security. Whether disease start at home or abroad, are curable or preventable, chronic or acute, or from human activity or deliberate attack, CDC responds to America’s most pressing health threats. CDC is headquartered in Atlanta and has experts located throughout the United States and the world.