关键词: 肾综合征出血热, 流行病学调查

Abstract:

Objective To identify the relationship between the outbreak of hemorrhagic fever with renal syndrome (HFRS) and the distribution of animal hosts in Chengde city, and provide the corresponding prevention and control strategies. Methods The host animals of HFRS were monitored using night traps. The epidemic data were analyzed using Excel and Epi Info. Results Since the first HFRS case in 1984, serological verification and monitoring of the host animals had been conducted in the city based on the epidemic dynamics. The captured rodent species included Niviventer confucianus, Apodemus agrarius, A. peninsulae, Myodes rufocanus, Rattus norvegicus, Tscherskia triton, Spermophilus dauricus, and Cricetulus barabensis, in which virus-carrying animals were mainly R. norvegicus, A. agrarius, N. confucianus, and A. peninsulae. A. peninsulae was a virus-carrying species first captured in Pingquan county in the fall of 2004, while N. confucianus was first captured in Chengde Summer Resort in 2005. The highest virus-carrying rate appeared in 2002 (8.40%). After 2005, no virus host animals were observed. Conclusion The prevalent HFRS pathogen in Chengdu city was the SEO strain. Strengthening monitoring, immunization and eradication in the city and implementing targeted prevention measures to specific focal populations are crucial to effective prevention and control of the epidemic.

Key words: Hemorrhagic fever with renal syndrome, Epidemiological investigation