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Anaplasmosis in China

Anaplasmosis has been documented in both humans and animals in China. [1,2] The following background data are abstracted from GIDEON (primary reference available on request).

Time and Place:
– Seropositive ruminants have been documented in Xinjiang Uygur Autonomous Region area.
– Seropositive rodents have been documented in Jilin Province: Japanese field mouse (Apodemus peninsulae), Black-striped field mouse (A. agrarius) and Siberian chipmunk (Tamias sibirica).
– Ehrlichial DNA (Anaplasma phagocytophilum) has been detected in Ixodes persulcatus ticks from the Northeastern (ie, Lyme disease) region – Inner Mongolia and Heilongjiang Province.
– Infected rodents, sheep and ticks (I. persulcatus and Dermacentor silvarum) have been detected in Jilin Province.

Prevalence surveys:
8.82% of forest rodents in Jilin Province, 1.64% in Helongjiang Province and 0% in Inner Mongolia autonomous region (2007 publication)
14.1% of rodents captured from a mountainous area in southeastern China (Zhejiang Province, 2008 publication)
5.5% of rodents from Heilongjiang Province, Inner Mongolia Autonomous Region, Jilin Province, Zhejiang Province, Guizhou Province, and Xinjiang Autonomous Region (2004 to 2006)
1.9% of rabbits captured in southeastern China (2009 publication)
4.6% to 6.8% of I. persulcatus in Jilin Province (2003 to 2005 publications)
7.34% of small mammals in the forest area of Hengduan Mountains, southwestern China (2009 publication)
6.7% of livestock and 14.5% of small rodents (2010 publication)

Seroprevalence surveys:
8.8% of farm workers near Tianjin (2006)
19.8% of persons with animal or tick exposure in central and southeastern China (2007)

Notable outbreaks:
2006 – An outbreak (9 cases) of transmission through blood or secretions was reported in Anhui Province among hospital staff who had treated an index patient.
2008 – An outbreak (5 cases, 3 fatal) was reported in Wanjiakou village in Shandong Province.

References:
1. Berger SA. Infectious Diseases of China, 614 pp. Gideon e-books, 2010. https://www.gideononline.com/ebooks/country/infectious-diseases-of-china/
2. Berger SA. Anaplasmosis: Global Status, 23 pp. Gideon e-books, 2010. https://www.gideononline.com/ebooks/disease/anaplasmosis-global-status/

Update: Quoted in ProMED

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