272 isolates of Salmonella Enteritidis (111 isolated from frozen broiler chicken carcasses, 126 from human food and other biological materials involved in food poisoning outbreaks and 35 from different poultry materials) were selected for phage typing. From these, 111 were phage typed, 57.65% being classified as phage type 4, 32.43% as phage type 4a, 3.60% as phage type 6a and 0.90% as phage ty...

33 stools from 518 patients suspected of having cholera were examined. from 174 of these patients vibrio ei tor was isolated. po of these strains belonged to phage type iv, 53 to phage type v and one strain was untypable. it is suggested that these strains originated from two different sources.

A staphylococcus typing phage (NCTC 8426) was found to form lysogenic systems with three strains of staphylococci. In the case of two of these strains, staphylococci lysogenically infected with the typing phage were now lysed by the temperate phages they had previously carried. This loss of immunity was due to the replacement of the originally carried prophage by the prophage of phage 8426. Thi...

Bacteriophage typing was used to subdivide Klebsiella obtained from patients in a surgical intensive care unit during a 2-year period. The 15 phages employed to type the strains were propagated by a soft-agar layer technique. In all, 23 phage types were found among the 120 clinical strains. The phage types of repeat isolates were reproducible. Only 70% of the strains tested were phage typable, ...

Encapsulated Staphylococcus aureus strains M and Smith diffuse bound phage 84 and 52A much less efficiently than their unencapsulated counterparts, M variant and Smith compact. It is proposed that the capsule acts as a barrier excluding phage from interaction with their receptor (cell wall peptidoglycan and teichoic acid). Inefficient phage adsorption by encapsulated staphylococci may explain, ...

Ralston, Doris J. (University of California, Berkeley) and Mary McIvor. Lysis-from-without of Staphylococcus aureus strains by combinations of specific phages and phage-induced lytic enzymes. J. Bacteriol. 88:676-681. 1964-Several typing phages, adsorbed in sufficient concentrations to their homologous propagating strains, altered the cell surface so as to render the cells sensitive to rapid an...

Since their discovery by Craigie and Yen (1938), the Vi typing phages have been extensively employed in the study of the epidemiology of typhoid fever. Susceptibility to these phages is related to the presence of the Vi antigen, a component found in almost all freshly isolated typhoid cultures. The specific typing preparations, which produce confluent lysis with their homologous typhoid strains...

INTRODUCTION Inadequate potable water supply and poor sanitation predispose to food- and water-borne diseases associated with Salmonella enterica serovars in developing countries. In this study the possible source of an unprecedented upsurge of Salmonella-associated community gastroenteritis was traced using both phage-typing and pulsed-field gel electrophoresis (PFGE). METHODOLOGY Nineteen S...