【正文】
O2 ? H2S + Department of Microbiology, Harbin Medical University Pathogens Human pathogen Animal reservoirs 1. Brucella melitensis goat, sheep 2. Brucella abortus cattle 3. Brucella suis pig Department of Microbiology, Harbin Medical University Transmission ? Enter human body by ?Ingestion of contaminated milk products ?Through the skin directly contact in an occupational setting such as abattoir Department of Microbiology, Harbin Medical University Pathogenesis ? Brucella localized in the reticuloendothelial system (lymph nodes, liver, spleen, and bone marrow) ? Cause granulomatosis, abscess, and caseation ? No exotoxin is produced, so endotoxin is