Investigation of an imported hemorrhagic fever with renal syndrome infection in a military unit

Abstract

Objective To determine the risk factors of a hemorrhagic fever with renal syndrome (HFRS) outbreak,in order to provide scientific basis for HFRS prevention and control.Methods Epidemiological data were collected.The mouse density was monitored trap-at-night method.The serum samples of the people who contacted with the patients were acquired.The HFRS antibody was detected by indirect immunofluorescence assay and the virus nucleic acid was tested by RT-PCR.Results The onset time of 2 cases were 12 and 17 days after enlistment,and they were diagnosed as HFRS respectively.The mouse density was 1.00％ around the military camp,and 2 Norway rats were captured.The hantavirus antibody positive rate and virus carried rate of the rats were 0.The serum antibody positive rate of the people who contacted with the patients was 2.04％,and the virus nucleic acid were negative.Conclusions The epidemic is proved to be imported by HFRS cases.It is necessary to reinforce epidemic surveillance to prevent HFRS epidemic. Key words: Hemorrhagic fever with renal syndrome; Hantavirus; Epidemiology