| clostridium infection (jisizheng) in yaks in qinghai, china. | since the mid-1980s, outbreaks of a disease characterized by a sudden onset, acute deaths and extensive haemorrhages in the viscera and digestive tract of yaks have been prevalent in qilian, qinghai, china. the disease is known as jisiheng by local people. virulent clostridium perfringens type a and clostridium haemolytica were isolated from yaks that had died of jisizheng. in 1996 and 1997, yaks were immunized with a polyvalent inactivated vaccine against c. perfringens and with an inactivated ... | 2001 | 11583378 |
| [epidemiological survey on echinococcus infection in animals in qinghai province]. | parasitological and dissection methods were used to confirm echinococcus infection and echinococcosis in animals, and to understand the epidemiological situation in final and intermediate animal hosts in qinghai province. three echinococcus species were found in the province including e. granulosus, e. multilocularis and e. shiquicus. the prevalence of hydatid disease showed a tendency of increase with an average rate of over 50% in yaks and sheep. higher prevalence in wild animals as intermedia ... | 2007 | 18038811 |
| characterization of the h5n1 highly pathogenic avian influenza virus derived from wild pikas in china. | the highly pathogenic h5n1 avian influenza virus emerged from china in 1996 and has spread across eurasia and africa, with a continuous stream of new cases of human infection appearing since the first large-scale outbreak among migratory birds at qinghai lake. the role of wild birds, which are the natural reservoirs for the virus, in the epidemiology of the h5n1 virus has raised great public health concern, but their role in the spread of the virus within the natural ecosystem of free-ranging te ... | 2009 | 19553321 |