Brucellosis induced by RB51 vaccine in a pregnant heifer.

摘要: Brucellosis developed in a 14.5-month-old Gelbvieh heifer after the animal was vaccinated with calfhood dose of strain RB51 Brucella abortus vaccine s.c. during fourth month its first pregnancy. The experienced dystocia and euthanatized cesarean section because large uterine tear. fetus dead at delivery. Suppurative placentitis fetal pneumonia were evident necropsy. isolated from placenta fetus' lung.