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DHS information: http://ideas.health.vic.gov.au/diseases.asp
Overseas information: www.cdc.gov/ncidod/diseases/Index.htm

Listeriosis

A disease caused by infection with the organism Listeria monocytogenes.

Listeria monocytogenes is found commonly in wild animals, domesticated animals, and in people who have close association with domestic animals such as slaughterhouse workers and dairy farmers. Listeriosis is a common cause of spontaneous abortion and stillbirth in domestic animals. L. monocytogenes also occurs as a food-borne contaminant that can cause disease in humans particularly pregnant women.

In humans, Listeriosis most often causes a generalized blood infection (septicaemia) or meningitis (inflammation of the covering of the brain). The foetus, newborn, and pregnant women are particularly susceptible. The immunocompromised people such as those being treated for cancer, those with organ transplants, and those with AIDS are at increased risk.

Infection of a pregnant woman early in pregnancy generally leads to spontaneous abortion. The organism may be transmitted across the placenta. Infections in late pregnancy may lead to stillbirth or an infant who dies within a few hours of birth. About half of infants infected at or near term will die.

PREVENTION
Avoidance of contact with wild and domestic animals during pregnancy is advisable. Food products such as nonpasteurized soft cheeses have been implicated in outbreaks of listeriosis.
see DHS fact sheet