[Problems of listeriosis].

The first human listeriosis case was diagnosed in 1965 in Hungary. Since that time about 90 bacteriologically verified cases have been recognized. The half of the cases occurred in pregnant women and newborns. 45% of the patients died. The author reports the newest information about characteristics and ecology of Listeria strains and epidemiology of listeriosis. So, importance of hygienic animal husbandry and food production, transmitter role of foods, possibilities of prevention, treatment and diagnostic methods are mentioned in this paper.