RESUMEN
Objective To study the human brucellosis infection status and its epidemic feature during 2003-2006.Methods A total of 485 blood samples of serum underwent rose bengal plate test(RBPT)and serum agglutination test(SAT),which include 422 cases having a history of contacting with sheep/goats or cattle,22 suspected eases,and 41 cases having contacted with infected persons.All cases were diagnosed according serology test and epidemiologic survey.Results The positive rates of Serum antibodies(SAT titer)were 8.8%(12/137),12.7%(8/63),13.1%(22/171)and 16.2%(19/114),respectively,during 2003 to 2006 in Tangshan,in an increasing Rend and peaked in the second and the third seasons 77.0%(47/61).The mostly infected population were those who contacted with sheep/goats or cattle,accounting for 98.4%(60/61).Livestock farmers 86.9%(53/61),and veterinarians 8.2%(5/61)were mostly likely to be infected.Assay of serum antibodies is negative in the persons contacting with infected cases.Conclusions The prevalence of human brucellsis had presented a rising tendency in highly dangerous crowd of Tangshan.Contacting with infected livestock(such as sheep/goats or cattle),especially their aborted materials and placenta were mainly transmitted modes of human brucellsis.However,cases of person-to-person transmission has not been discovered in this study.