关键词: 附红细胞体, 附红细胞体病, 感染率, 影响因素

Abstract:

Objective　To assess the course of the first case of human eperythrozoonosis in Huludao city and to determine the current infection situation and influential factors in humans and animals. Methods　Blood smears were examined under microscope to determine the infection in humans and animals, blood analyzers employed to detect anemia in humans. Types and density of mosquitoes were analyzed using outdoor light traps. A case-control study followed to identify the influential factors for infection. Results　The overall infection rate of eperythrozoon in humans was 30.67% without noticeable significant difference between men and women or among different age groups (χ2＝1.79, P＞0.05; χ2＝1.05, P＞0.05). The infection rate of eperythrozoon in swine was 60.87%. High density of mosquitoes was detected as Aedes vexans and Culex dominated. Anemic symptoms were primarily present in younger children. An excess risk for eperythrozoon infection was noted in swine breeders 2.77 times higher than in others, and the risk in those breeding and delivering swine was 2.97 times higher than pure breeders. Conclusion　High prevalence of eperythrozoonosis was found in both humans and animals in the area, children constituting the major victims. Swine were the important reservoir host, breeding swine the risk factor and mosquitoes the transmission medium.

Key words: Eperythrozoon, Eperythrozoonosis, Infection rate, Influential factor