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We sequenced DNA from spleens of rodents captured in rural areas of Qingdao, East China, during 2013–2015. We found 1 Apodemus agrarius mouse infected with Rickettsia conorii, indicating a natural Mediterranean spotted fever foci exists in East China and that the range of R. conorii could be expanding.

We identified Candidatus Borrelia fainii, a human pathogenic bacterium causing New World relapsing fever in a Myotis bat in eastern China. This finding expands knowledge about the geographic distribution of Borrelia spp. and the potential for infection with New World relapsing fever in China.

PCR amplification of the rrs2 gene indicated that 50% (62/124) of insectivorous bats from eastern China were infected with Leptospira borgpetersenii, L. kirschneri, and several potentially new Leptospira species. Multilocus sequence typing defined 3 novel sequence types in L. kirschneri, suggesting that bats are major carriers of Leptospira.