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Listeriosis


Symptoms & Signs

What are the signs and symptoms of the infection?

Listeriosis usually causes no symptoms in otherwise healthy people. But infection with the bacteria can cause:

  • diarrhea
  • fever
  • headache
  • vomiting
  • Some people may have more serious reactions to infection with the bacteria. Children, the elderly, and people with weakened immune systems are at special risk. They may develop meningitis, an inflammation of the membranes surrounding the brain and spinal cord.

    Babies who have been infected with the bacteria usually get pneumonia. Sepsis, a dangerous blood infection, and meningitis are also common among infected infants.