[Epidemiological studies of the infection of ticks with borreliosis agents in small mammals from north Germany].

In a two years study into the infestation of ticks with Borrelia burgdorferi from mice in North Germany 1330 mice out of 11 species could be examined. Altogether 508 mice showed to be parasitized by 1445 ticks belonging to three species of Ixodes. 777 I. ricinus from 334 mice could be tested for B. burgdorferi. In 66 ticks (8.5%) from 34 mice (10.2%) borreliae could be demonstrated. These discoveries came from 9 of 14 investigated forest regions in Lower Saxony.