An Epidemiological Analysis on the First Case of Epidemic Hemorrhagic Fever in Changning County

Objective The epidemiological characteristics of human epidemic hemorrhagic fever devd oping for the first time in Changning County in April 2003 was to be deliniftely known in order to pro vide a basis for the prevention and treatment of the disease. Methods An indirect immunoflurscent an tibody test(IFAT)and direct immunofluorecent test were applied to the specific IgG antibody and mouse lung epidemic hemorrhagic fever antigen Results Two cases of human epidemic hemorrhagic fever were found for the first time in Changning Conty，its morbidity being 5.57／100000.This was the first report of human cases of the five counties(distrits)under Baoshan city.181mice were caught in residen tial areas. Conclusion The positive reaction showed that natural infection of hemorrhagic fever virus extsted among the mice there.