Is there an association ofPneumocystisinfection with the presence of arena-, hanta-, and poxvirus antibodies in wild mice and shrews in Finland?

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Abstract
As part of studies on the nature of the endemic virus infections in natural rodent hosts, the possible association of cyst forms ofPneumocystisspp. with the presence of hanta-, cowpox-, and arenavirus antibodies in wild mice (Apodemus flavicollis,N=105;Apodemus agrarius,N=63;Micromys minutus,N=50) and the common shrew (Sorex araneus,N=101) was studied in south-central Finland. One hantavirus (Saaremaa virus, SAAV) seropositiveA. agrarius, and 2 cowpoxvirus (CPXV) seropositiveS. araneuswere detected, and antibodies against an arenavirus (Lymphocytic choriomeningitis virus, LCMV) were found in all 3 mouse species but not in shrews. Cyst forms ofPneumocystisspp. were detected in all species exceptA. agrarius. There was no significant association between virus antibodies (LCMV in mice, and CPXV in shrews) and cyst forms ofPneumocystisin any of the species. Concurrent presence of virus antibodies (LCMV) and cyst forms ofPneumocystiswere detected only in 1M. minutus. In conclusion, we found no evidence of any association betweenPneumocystisand antibodies to any of the viruses tested.