A serotyping system for Clostridium welchii (C. perfringens) type a, and studies on the type-specific antigens

Abstract
A serotyping scheme for Clostridium welchii (C. perfringens) type A employing 57 antisera has been used to investigate the epidemiology of 153 food-poisoning outbreaks and 32 cases of gas gangrene and other clinical infections. Respectively 65 % and 59 % of the isolates were typable, and in 55 % of the food-poisoning outbreaks the causative serotypes were established. Isolation and reporting methods that would render the typing scheme of even greater epidemiological value are described.