[Listeria monocytogenes agglutinating antibodies in children].

The AA. relate the results of a serological study on the spreading of listeria infection over the pediatric population of Liguria. The research of agglutinating antibodies for types 1 and 4b of L. monocytogenes in 367 sera gave the following results: -- 195 sera (53,13%) resulted positive, although at low titer (1/40) as a general rule; -- on the whole, agglutinins toward type 1 had considerably higher incidence than toward type 4b ones (57,43% and 5,12% respectively); -- O - antibodies had higher incidence (44,95%) than H - antibodies (22,34%).