1.Seroprevalence of Toxoplasma gondii infection in sheep from northern China
Gao, Y. ; Guo, H.P ; Adjou Moumouni, P.F ; Sun, M. ; Liu, M.M ; Efstratiou, A ; Lee, S.H. ; Wang, G.B. ; Li, J.X. ; Li, Y.C. ; Ringo, A.E. ; Galon, E. ; Masatani, T. ; Du, J.G. ; Xuan, X.N.
Tropical Biomedicine 2018;35(3):664-668
Toxoplasma gondii is an important zoonotic parasite causing significant health
problems to humans and animals. In recent years, a number of investigations about the
seroprevalence of T. gondii in China have been reported, but little is known on the prevalence
of toxoplasmosis in sheep in northern China. In the present study, a total of 288 sheep serum
samples were collected from Inner Mongolia, Heilongjiang, Jilin and Hebei provinces of
northern China for T. gondii antibody survey using a latex agglutination test (LAT). Of these,
87 (30.2%) serum samples were positive for antibodies to T. gondii, and the antibody titres
ranged from 1:64 to 1:1,024. Seroprevalence of T. gondii infection in sheep was 17.1% in
Inner Mongolia, 33.8% in Heilongjiang, 24.6% in Jilin and 46.3% in Hebei. Age and rearing
system significantly affected seropositivity. The present survey indicates antibodies to T.
gondii are widely prevalent in sheep in northern China, which may cause public health
problems in these provinces.
2.Cysticercosis in Domestic Animals and Rodents
Fan P.C. ; Chung W.C. ; Guo J.X. ; Ma X.Y. ; Wang I.C.
Chinese Journal of Zoonoses 2006;(1):1-10
Cysticercus cellulosae, C. bovis, and C. taiwanensis are the three species of cysticercosis of human taeniid with their adults worms Taenia solium, T. saginata saginata and T. s. asiatica respectively. C. cellulosae is prevalent in America, Europe and Asia, C. bovis in Africa, America and Asia and C. taiwanensis in Asia. The natural infection source is pig for C. cellulosae, cattle for C. bovis and pig and wild boar for C. taiwanensis. The predilection sites are muscles for C. cellulosae and C. bovis and liver for C. taiwanensis. While the prepatent periods of these three species were 60-70 days, 60-75 days and 28 days respectively. Most C. cellulosae and a few for C. bovis and C. taiwanensis survive in pig, while most C. bovis and a few for C. taiwanensis survive in cattle. In rodent, all three species have a long life. C. cellulosae and C. bovis migrate through blood and lymph vessels to the small intestinal wall and then to the body muscles while C. taiwanensis migrate through blood vessels to the small intestinal wall and then to the liver. The minimal effective dosage of praziquantel against cysticercosis should be 100 mg/kg daily for three consecutive days.
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