[Yan, C.; Wang, X. Q.; Lin, R. Q.; Xu, M. J.; Zhu, X. Q.] Chinese Acad Agr Sci, Lanzhou Vet Res Inst, State Key Lab Vet Etiol Biol, Lanzhou 730046, Gansu, Peoples R China.

[Zhang, Y. B.] Sun Yat Sen Univ, Affiliated Hosp 3, Dept Emergency Med, Guangzhou 510630, Guangdong, Peoples R China.

[Wang, Y. N.; Wang, X. Q.; Lin, R. Q.; Cheng, T.; He, X. H.; Yuan, Z. G.] S China Agr Univ, Coll Vet Med, Guangzhou 510642, Guangdong, Peoples R China.

[Yan, C.] Xuzhou Med Coll, Dept Pathogen Biol & Immunol, Xuzhou 221004, Jiangsu, Peoples R China.

[Zhu, X. Q.] Heilongjiang Bayi Agr Univ, Coll Anim Sci & Vet Med, Daqing 163319, Heilongjiang Pr, Peoples R China.

[Zhang, Y. B.] S

Sun Yat Sen Univ, Affiliated Hosp 3, Dept Emergency Med, Guangzhou 510630, Guangdong, Peoples R China.

Chlamydophila psittaci is widely distributed in a number of birds and humans throughout the world;but little is known of the prevalence of C. psittaci in birds in China. In the present study;sera from 240 chickens;200 ducks;200 geese and 200 pigeons in China’s southern Guangdong Province were assayed for Chlamydophila antibodies by indirect hemagglutination assay (IHA). The specific antibodies were found in sera of 17.92% of 240 chickens;6% of 200 ducks;22% of 200 geese and 17% of 200 pigeons. Statistical analysis showed that the seroprevalence of C. psittaci in ducks was significantly lower than that in chickens;geese and pigeons;respectively (P < 0.05). The seroprevalence in free-range chickens was 10.83%;and it was 25% in caged chickens;and the difference was statistically significant (P < 0.05). Among different age groups of pigeons;the difference in seroprevalence of C. psittaci between adult pigeons and adolescent pigeons was significant (P < 0.05). This is the first time that the seroprevalence of Chlamydophila infection in domestic birds in Southern China was reported;and the data showed that the prevalence of Chlamydophila infection in domestic birds is high;indicating that the domestic birds may be an important source for human infection by C. psittaci in Southern China.

动物医学院