Settnes O P, Lodal J
Nord Vet Med. 1980 Jan;32(1):17-27.
Pneumocystis carinii has been found in 17 of 90 (19%) wild living trapped brown rats (Rattus norvegicus). The positive brown rats originated from about 25% of the trapping localities examined. Among brown rats of two breeding stocks, H and S, pneumocysts were found in 43.5% of the H rats, but in none of the S rats. By keeping brown H rats on a low protein diet for 8 weeks, it was possible to augment the prevalence to 53.8%. Pneumocystis carinii has furthermore been found in one of eight (12.5%) wild living long-tailed field mice (Apodemus sylvaticus), in one of 16 (6.3%) wild living house mice (Mus musculus), and in one of ten roof rats (Rattus rattus) of the Danish Pest Infestation Laboratory's breeding stock. Other rodent species, yellow-necked field mouse (Apodemus flavicollis), water vole (Arvicola terrestris), bank vole (Clethrionomys glareolus), field vole (Microtus agrestis), and an insectivor species, the common shrew (Sorex araneus) were all examined in small numbers, and were all negative for pneumocysts. Among rodents in Denmark. Rattus norvegicus seems to be the most important reservoir host for Pneumocystis carinii.
在90只野外捕获的褐家鼠（褐鼠）中，发现17只（19%）感染了卡氏肺孢子虫。阳性褐家鼠来自约25%的被检查捕获地点。在两种繁殖种群H和S的褐家鼠中，43.5%的H种群褐家鼠发现有肺孢子虫，但S种群褐家鼠均未发现。通过让H种群褐家鼠食用低蛋白饮食8周，有可能将感染率提高到53.8%。此外，在8只（12.5%）野外长尾田鼠（黄颈姬鼠）中的1只、16只（6.3%）野外家鼠（小家鼠）中的1只以及丹麦害虫防治实验室繁殖种群的10只屋顶鼠（黑家鼠）中的1只中发现了卡氏肺孢子虫。其他啮齿动物物种，黄颈田鼠（黄颈姬鼠）、水田鼠（水鼹）、林姬鼠（林姬鼠）、田鼠（田鼠）以及一种食虫动物普通鼩鼱（普通鼩鼱）的检查数量都很少，且均未发现肺孢子虫。在丹麦的啮齿动物中，褐家鼠似乎是卡氏肺孢子虫最重要的储存宿主。
