Jiglu: Farmtalking: Discussion: RE: Brucellosis

Originally from: Farmtalking

Reported on Warmwell – http://www.warmwell.com

March 14 – 20 ~ "RB51 vaccine has become the official brucellosis vaccine for control of brucellosis in cattle in the United States."

The DEFRA brucellosis "Q&A" page

"...given that the infection is very unlikely to be widespread in the national herd, vaccination would not be appropriate. As it is difficult to distinguish between infected and vaccinated animals vaccination would compromise our efforts to identify any undisclosed pockets of infection and, in the longer term, compromise national surveillance procedures."

However, the brucellosis research team in the Louisiana State University Agricultural Center, working with Dr. G.G Schurig, have developed a "stable rough mutant of a smooth virulent Brucella abortus", Strain RB51

"...RB51 protected cattle against infection when RB51 vaccinated cattle were experimentally challenged with virulent Brucella abortus. After the initial reports of these findings, others began conducting studies with larger numbers of experimental animals to demonstrate that... RB51 did not cause vaccine-induced serological reactions that confuse diagnosis of true infections..

RB51 vaccine has become the official brucellosis vaccine for control of brucellosis in cattle in the United States. While providing levels of protection against infection equal to those observed with Strain 19 vaccine, RB51 has eliminated the very costly persistent serological titer problems of Strain 19. Contact: Fred Enright, Louisiana Agricultural Experiment Station, LSU Agricultural Center 225–388–4194 FAX 225–388–4890"

."http://www.lsuagcenter.com/Communications/impactreports2000/vaccine.htm