Transmission of Salmonella between wildlife and meat-production animals in Denmark.

Aims: To investigate the transmission of Salmonella spp. between production animals (pigs and cattle) and wildlife on production animal farms in Denmark.

Methods And Results: In the winter and summer of 2001 and 2002, 3622 samples were collected from Salmonella-infected and noninfected herds of pigs and cattle and surrounding wildlife.

Verocytotoxin-producing Escherichia coli in wild birds and rodents in close proximity to farms.

Wild animals living close to cattle and pig farms (four each) were examined for verocytotoxin-producing Escherichia coli (VTEC; also known as Shiga toxin-producing E. coli). The prevalence of VTEC among the 260 samples from wild animals was generally low.

Distribution of Puumala hantavirus in Denmark: analysis of bank voles (Clethrionomys glareolus) from Fyn and Jutland.

The majority of hantaviral infections in Denmark since 1957 have occurred on the island of Fyn. We have recently shown the presence of Puumala hantavirus (PUUV) in bank voles (Clethrionomys glareolus) on Fyn. To learn more about the distribution and prevalence of PUUV in Denmark, 310 small mammals, belonging to six rodent and two insectivore species, were trapped in four localities on Fyn and three localities on the Jutland Peninsula (mainland Denmark), where only a few cases of nephropathia epidemica (NE) have been confirmed so far.

Palatability and toxicity of fipronil as a systemic insecticide in a bromadiolone rodenticide bait for rat and flea control.

Vector control in plague-infested areas requires a simultaneous killing of rodents and their fleas. We investigated the efficacy of a combination of a systemic insecticide, fipronil, in a rodenticide bait formulation under laboratory conditions. Four different concentrations of fipronil (0.

Population structure of rat-derived Pneumocystis carinii in Danish wild rats.

The rat model of Pneumocystis carinii pneumonia is frequently used to study human P. carinii infection, but there are many differences between the rat and human infections. We studied naturally acquired P.