An Outbreak of Listeriosis in Ewe Flock in Hokkaido

Antimicrobial Susceptibilities of Listeria monocytogenes Isolated in Japan

“…Previous researches suggested that veterinary use of antibiotics may cause increased resistance in human pathogens via food exposure (reviewed by [10]). However, there have been very few studies on antibiotic resistance of L. monocytogenes isolated from foods in Japan [7], and most studies were performed with small numbers of isolates from sporadic cases of human or animal listeriosis [16,17,19,20]. In this study, we investigated the susceptibility of 201 isolates to 3 categories of antibiotics: (1) antibiotics used for the treatment of human bacterial infection, (2) antibiotics used for livestock, to determine the level of diffusion of resistance via dairy and fishery products, and other types of food, to humans, and (3) antibiotics used as feed additives.…”

“…ABPC (Wako Chemicals, Osaka, Japan), chloramphenicol (CP; Wako), erythromycin (EM; Sigma, St. Louis, MO, U.S.A.), gentamicin (GM; Sigma), kanamycin (KM; Wako), lincomycin (LCM), and vancomycin (VCM) are major antibiotics used for human bacterial infection. Dihydrostreptomycin (DSM), enrofloxacin (ERFX; Wako) and oxytetracycline (OTC) are used for animal diseases, and the susceptibility of L. monocytogenes have been investigated in the previous studies [1,2,6,17]. Nosiheptide (NHT), salinomycin (SLM) and virginiamycin (VGM) are used as feed additives for livestock.…”

Listeriosis in a Raccoon Dog (Nyctereutes procyonoides) Associated with Canine Distemper.

“…The infection, especially caused by Listeria monocytogenes, has been most frequently reported in cattle, sheep and goat, and less frequently in pigs and horses [8,15]. The pathogen has been isolated from healthy animals such as rats, cattle, dogs and pigs for reasons of public health concern [2,3,5,6].…”