the percentage of recruits with tetanus antitoxin titres less than 0.1 iu per ml was significantly greater than the percentage of serving personnel with antitoxin titres less than 0.1 iu per ml and the overall geometric mean titre of the antitoxin in the sera of the recruits was significantly lower than that in the sera of the serving personnel .
C0039615
tetanus antitoxin
C0003445
antitoxin