The authors submit a review on infections caused by hantaviruses which are at present classified as „new and re-appearing infections diseases". The authors describe the clinical manifestations, specific diagnosis and possible treatment. In the Czech Republic the incidence of hantaviruses is not alarming but with regard to the serious character of some forms of the disease and possible import it is essential to pay attention to these infections. On the territory of our Republic circulate probably only serotypes of hantaviruses which cause a mild form of the disease described as nephropathia epidemica. The authors present also their own results of serological investigations of hantavirus antibodies.

        Key words: febrile conditions - hantaviruses - zoonoses.