Pathogenicity testing of Listeria strains isolated from food in fertilized hen's eggs.
Pathogenicity testing of 10-day-old fertilized hen's eggs infected with Listeria species demonstrated that L. monocytogenes isolated from cheese and human samples caused death in 100% of the injected chicken embryos within 96 h. In contrast, L. innocua isolated from cheese was fatal for only 17% of the infected embryos. All embryos infected with L. seeligeri survived. The results confirmed statements of previous authors about the pathogenicity of L. monocytogenes, regardless of its origin.
Lattmann
C
C
Institut für Hygiene und Mikrobiologie, Universität, Würzburg.
Schwarzkopf
A
A
Seeliger
H P
HP
D000818:Animals; D002611:Cheese; D002642:Chick Embryo / Q000382:microbiology*; D005516:Food Microbiology; D006801:Humans; D008087:Listeria / Q000472:pathogenicity*; D008089:Listeria monocytogenes / Q000472:pathogenicity*; D008088:Listeriosis / Q000382:microbiology*