BACTERIOPHAGE STUDIES ON THE HEMORRHAGIC SEPTICEMIA PASTEURELLAE

Viral Hemorrhagic Septicemia

Viral hemorrhagic septicemia (VHS) is an acute to chronic viral disease of salmonids that causes serious economic problems in rainbow trout cultured in several European countries. Although this disease has not been detected in North America, it is included here as a disease of significant concern. The disease was first recognized by Schaeperclaus in Germany in 1938. In 1949, the disease was nam...

Viral Hemorrhagic Septicemia of Fishes

Shipping Fever, or Hemorrhagic Septicemia

THE AUTHOR calls this the most serious of a group of cattle maladies that are commonly associated with the hardships and hazards of shipping—that is, the handling, neglect, or exposure of animals in transit or shortly afterward. It is an infectious disease which often terminates in death. The losses from shipping fever can be greatly reduced by careful management in shipping. Vaccination with b...

Studies on Bacteriophage and Metabolic Identification of Brucella Strains

Studies on Bacteriophage

Phase I and Phase II Sh. sonnei exhibit differences in their susceptibility to the T series of bacteriophages. Both microorganisms are lysed by T(2) and T(6), but only the Phase II bacillus is lysed by T(3), T(4), and T(7). Lysis of the Phase I or Phase II bacillus by T(2) or T(6) is not inhibited by the homologous type-specific antigen. In the presence of an appropriate cofactor, however, the ...