The Bearing of Outbreaks of Food-Poisoning upon the Etiology of Epidemic Diarrhœa

Moreover, there is evidence to show that the agent which initiates an attack of diarrhoea may, in the course of the illness caused by its action, be superseded by other agents (e.g., certain bacteria generally present in the intestine), by which the course of the disease may be so completely altered as to make it difficult to recognise the relations between cause and effect. In bringing forward certain facts which, in my opinion, establish clearly certain relations between food poisoning and epidemic diarrhoea, I must labour under a double