Medicina
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Serum samples from urban and laboratory rats, laboratory mice and wild and laboratory cricetids in Argentina were tested by immunofluorescence and plaque reduction neutralization tests to investigate prevalence of anti-Hantavirus antibodies. A total of 102 sera were obtained from laboratory rodents in 4 different animal-rooms, 31 from harbor rats and 30 from wild cricetids in 1985-1987. ⋯ On the contrary, laboratory mice and cricetids failed to show Hantavirus infection while the wild vesper mouse Calomys musculinus (the main Junin virus reservoir) showed a prevalence of 23.5%. The presence of Hantavirus infection is hereby reported for the first time in wild C. musculinus and in laboratory R. norvegicus in Argentina.