Characteristics of a bacteriophage-infected strain of Pasteurella pestis isolated from a human case of plague

A pseudolysogenic strain of Pasteurella pestis was isolated from a human in Vietnam. The culture contained a stable mixture of bacteriophage and phage-sensitive and phage-resistant P. pestis.

Some observations on the current plague outbreak in the Republic of Vietnam

Images

Isolation of Antigens of Pasteurella pestis I. Lipopolysaccharide-Protein Complex and R and S Antigens

Larrabee, Allan R. (Fort Detrick, Frederick, Md.), John D. Marshall, and Dan Crozier . Isolation of antigens of Pasteurella pestis . I. Lipopolysaccharide-protein complex and R and S antigens. J. Bacteriol. 90: 116–119. 1965.— Pasteurella pestis contains at least 18 different antigens, 2 of which will protect experimental animals from challenge infection. A specific polysaccharide isolated and described as a hapten was isolated as a complete antigen. Two additional antigens were isolated from P. pestis . The preparation of antisera directed against these three antigens and the content of protein, lipid, and carbohydrate of each preparation were studied. None of the preparations will protect mice from challenge infection with virulent P. pestis . A basis for naming the new antigens which does not conflict with previously published designations is presented.