| molecular typing of isolates obtained from aborted foetuses in brucella-free holstein dairy cattle herd after immunisation with brucella abortus rb51 vaccine in egypt. | bovine brucellosis is endemic in egypt in spite of application of surveillance and control measures. an increase of abortions was reported in a holstein dairy cattle herd with 600 animals in damietta governorate in egypt after immunisation with brucella (b.) abortus rb51 vaccine. twenty one (10.6%) of 197 vaccinated cows aborted after 3 months. all aborted cows had been tested seronegative for brucellosis in the past 3 years. b. abortus was isolated from four foetuses. conventional biochemical a ... | 2016 | 27664334 |