Time and Place:
Trichinosis was first documented in China in 1918.
- Disease prevalence in Beijing was estimated at 0.3% in 1918 and 0.16% in 1919.
- The principal foci of trichinosis are located in the southeast, center and northeast.
- As of 1999, 17 or the country’s provinces and autonomous regions report the disease.
- 4,033 cases (73 fatal) were reported during 1964 to 1979; 5,558 in 1983; 15,599 (141 fatal) during 1980 to 1989; 5,529 (26 fatal) during 1990 to 2002.
- 88.6% of clinical cases and 99.6% of fatal cases during 1964 to 2002 were reported from Yunnan, Guangxi and Tibet.

Prevalence surveys:
(more…)

GIDEON was quoted in a recent ProMED post related to a case of unknown hemorrhagic disease in China:

Background information on HGA in China is available on the Global Infectious Disease and Epidemiology Network (GIDEON) website.

Seropositive ruminants have been documented in Xinjiang Uygur Autonomous Region area. (see ref 1 below)
- Seropositive rodents have been documented in Jilin Province: Japanese field mouse (_Apodemus peninsulae_), Black-striped field mouse (_A. agrarius_) and Siberian chipmunk (_Tamias sibiricu_). (see
ref 2 below)
(more…)

In an undiagnosed case of hemorrhagic disease in China, Marjorie Pollack, a ProMED editor, used GIDEON to help figure out the differential diagnosis. From the ProMED note:

Using the database of the Global Infectious Disease and Epidemiology Network (GIDEON ) to see possible etiologies for a hemorrhagic fever syndrome in China, the most likely diagnosis would be Old World hantavirus infection (57 percent probability), followed by _Streptococcus suis_ infection (40 percent), leptospirosis (1.8 percent) and Crimean-Congo hemorrhagic fever (CCHF — less than one percent probability).

(more…)