This bacterium, gram-positive and member of the genus Listeria, is a food pathogen that can cause serious diseases, mainly in risk groups, such as the elderly, immunocompromised people, pregnant women, infants and children. Listeria usually causes abortions, septicemia or meningitis, presenting variable incubation periods, between 3 and 70 days, although symptoms usually appear within a month.




A person with listeriosis has a fever, muscle pain and occasionally gastrointestinal symptoms such as nausea or diarrhea. If the infection spreads to the nervous system, symptoms such as headache, stiff neck, confusion, loss of balance or seizures may occur.

Our diagnostic methods: