[Investigation on echinococcosis in animals in Gannan Tibetan Autonomous Prefecture].
OBJECTIVE
To make an investigation on echinococcosis among animals in Gannan Tibetan Autonomous Prefecture.


METHODS
21 villages from Maqu and Luqu counties were selected for the survey in August of 2004-September of 2007. Rodents were trapped in the field. Sheep and yak livers, hearts and lungs were collected from the local slaughterhouses for pathological examination. Domestic dogs (shepherd dogs) were de-wormed by 15% arecoline to receive adult worms and stray dogs were shot for dissection.


RESULTS
The prevalence of alveolar echinococcosis (AE) in Ochotona dahurica was 1.2% (1/87), and 2.3% (3/132) in Myospalax fontaniere, but no infection was found in Marmota himalayana, Ochotona tibetana and Mus musculus. 113 out of 1021 (11.1%) sheep were found infected with cystic echinococcosis (CE), and 3 (0.3%) with AE. 126 out of 634 (19.9%) yaks were infected with CE, and 2 yaks (0.3%) with AE. 17 out of 74 (23.0%) dogs were infected with Echinococcus granulosus (Eg), and 4 (5.4%) with Echinococcus multilocularis (Em).


CONCLUSIONS
The results showed that there is a widespread endemic of Echinococcus granulosus in dogs and wild animals in Gannan Tibetan Autonomous Prefecture, with less Echinococcus multilocularis infection.
Zhao
Yu-min
YM
Pathological and Biological Institute of Lanzhou University, Lanzhou 730000, China.
Tong
Su-xiang
SX
Jing
Tao
T
Chong
Shi-gui
SG
Cai
Xue-peng
XP
Jing
Zhi-zhong
ZZ
Han
Jian
J
D000818:Animals; D002417:Cattle / Q000469:parasitology; D004283:Dog Diseases / Q000453:epidemiology* / Q000469:parasitology*; D004285:Dogs / Q000469:parasitology; D004443:Echinococcosis / Q000453:epidemiology / Q000469:parasitology / Q000662:veterinary*; D048209:Echinococcus granulosus / Q000302:isolation & purification; D048210:Echinococcus multilocularis / Q000302:isolation & purification; D015995:Prevalence; D012377:Rodentia / Q000469:parasitology; D012756:Sheep / Q000469:parasitology; D018609:Tibet / Q000453:epidemiology