RELAPSING PARATYPHOID "A" INFECTION

Studies on a Paratyphoid Infection in Guinea Pigs

The spontaneous appearance of a second paratyphoid infection in a guinea pig population during the endemic stage of an earlier epidemic is reported. A comparative study of the gross pathology of the two infections indicated a difference in the loci of development of the respective organisms in the animal host. The two types were readily differentiated by direct agglutination with specific immun...

Microbic Virulence and Host Susceptibility in Paratyphoid-enteritidis Infection

Experimental studies t indicate that strains of paratyphoid-enteritidis bacilli differ among themselves in virulence but that for each strain, virulence is relatively a fixed property. I t seemed desirable, therefore, to test this point by a series of per o s passages which would at the same time afford an opportunity to observe infection under more usual conditions and to analyze more accurate...

Paratyphoid Infections in India

were paratyphosum A and in a subsequent paper (1934) he reported that out 112 bacteriologically positive cases, 19 were infections with paratyphosum A. Such divergent conclusions might result from?(1) Regional or seasonal variations in the incidence of paratyphoid infection in India. (2) Differences in the standards used for bacteriological diagnosis and (or) (3) Variations in the type of data ...

Paratyphoid C Fever

Residual brain infection in relapsing-fever borreliosis.

BACKGROUND Neurological involvement is common in the spirochetal infection relapsing fever (RF) in both humans and experimental animals. RF is best known for antigenic variation caused by the sequential expression of variable outer membrane lipoproteins of 2 sizes, variable small (Vsp) and variable large (Vlp) proteins. Less understood is the persistence of RF borreliae in the brain after they ...