Seroprevalence of Lyme disease and associated risk factors in rural population of Beijing.

A seroepidemiological survey of 801 local residents from 28 villages was conducted to assess the seroprevalence of Lyme disease and to identify the risk factors of becoming seropositive for Lyme disease in the northern suburb of Beijing. Forty-one serum samples were positive for IgG against B burgdorferi and the seroprevalence was 5.1% (41/801), indicating that Lyme disease is endemic in the rural population.

Rural residents in China are at increased risk of exposure to tick-borne pathogens Anaplasma phagocytophilum and Ehrlichia chaffeensis.

As emerging tick born rickettsial diseases caused by A. phagocytophilum and E. chaffeensis, anaplasmosis and ehrlichiosis have become a serious threat to human and animal health throughout the world.

Laboratory diagnosis and genotype identification of scrub typhus from Pinggu district, Beijing, 2008 and 2010.

This study was conducted to determine the diagnosis and genotype of Orientia tsutsugamushi in Pinggu district, Beijing. Indirect immunofluorescence assay (IFA) was performed to detect O. tsutsugamushi-specific immunoglobulin M (IgM) and immunoglobulin G (IgG) antibodies.

A case-control study of risk factors associated with scrub typhus infection in Beijing, China.

To investigate the risk factors of scrub typhus infection in Beijing, China, a case-control study was carried out. Cases (n = 56) were defined as persons who were diagnosed by PCR and serological method within three years. Three neighborhood control subjects were selected by matching for age and occupation.

Ehrlichiosis and zoonotic anaplasmosis in suburban areas of Beijing, China.

In 2006, an unusual nosocomial outbreak of anaplasmosis occurred in Anhui Province, China. To follow these emerging tickborne-rickettsioses, a larger survey of Ehrlichia chaffeensis and Anaplasma phagocytophilum seroprevalence among farm worker populations, and the divergence of the partial 16S rRNA gene sequences of A. phagocytophilum among domestic animals, were conducted in Yanqing, Miyun, and Tongzhou Counties in Beijing from March to April, 2009.

[Investigation on Ehrlichia chaffeensis and Anaplasma phagocytophilum infection among farmers and domestic animals in rural areas of Beijing, China].

Objective: To investigate the status of Ehrlichia (E.) chaffeensis and Anaplasma (A.) phagocytophilum infection among farming populations and domestic animals in the rural area of Beijing, China.