infection in spp. mice populating an urban habitat (Warsaw, Poland).

The two of three species of city-inhabiting (Warsaw, Poland) spp. mice were showed to be infected with spirochete bacterium considered to be a tick-borne relapsing fever (TBRF) disease causative agent. The pathogen infection was ascertained based on bacterium DNA presence in a blood (obtained from the lateral tail vein) of the mice, using the nested polymerase chain reaction (PCR) technique.