Walker P D, Foster W H, Knight P A, Freestone D S, Lawrence G
J Biol Stand. 1979;7(4):315-23. doi: 10.1016/s0092-1157(79)80006-2.
The reactogenicity and immunogenicity of various strengths of plain and adsorbed Cl. welchii type C toxoid have been evaluated in laboratory tests and in man in Papua New Guinea. The greater antigenicity and acceptable clinical reactivity of a vaccine containing 50 total combining power units per 0.5 mm of adsorbed toxoid resulted in its selection for further field studies.
