The investigations of Kauffmann in Denmark, of Hormaeche and his collaborators in Uruguay and of Edwards, Schiff, Seligmann, Bornstein and Saphra in the United States have added substantially to the knowledge of the antigenic structure and the incidence of paratyphoid bacilli and of infections due to Salmonella in animals and in human beings. Certainly infections caused by Salmonella in human beings are more common than was believed even a few years ago, and vital statistics do not give a true picture of their prevalence. This is evident from a perusal of recent literature.
A number of reports have been published pertaining to epidemic outbreaks of salmonellosis in infants. Among others, McKinlay1 described an epidemic of infectious diarrhea of the newly born. Unfortunately, the type of Salmonella responsible for the disease was not determined. Aballí, Falcón, Sala Panisello, Curbelo and Martinez Cruz2 observed an outbreak of Salmonella aertrycke infection