a single injection of lyophilized vaccine , prepared from live rough salmonella dublin strain ( hb 1/17 ) , protected 3 out of 6 calves , while 2 injections of a formalin-inactivated , alum-precipated vaccine , containing 1 % packed cells of s. dublin strain 2652 v , protected 5 out of 6 calves against intraduodenal challenge with 2 x 10 ( 9 ) , s. dublin strain 2652 v .
C0042210
vaccine
C0042212
inactivated