skin test reactions to a phenol-soluble antigen of brucella abortus among veterinary students, lyon, france, 1984. | in december 1984, 424 students at the national veterinary college, lyon, france, were skin-tested with a phenol-soluble antigen of brucella abortus b19. of all students, 2.6% had a positive intradermal reaction indicating previous contact with brucella. prevalence of positive reactions was significantly lower among students from the three first school years (less than 2%) compared with students in their last school year (5.9%). these results are discussed and compared to the prevalence of brucel ... | 1989 | 2767861 |