Virulence Factors of Streptococci and Staphylococci and Specific Prevention of Mastitis of Cows

Abstract

Mastitis of infectious etiology cause huge economic damage in dairy farming, and milk loses its nutritional value due to the appearance of pathogenic bacteria in it. The article discusses the factors of pathogenicity of some pathogens of mastitis Str. pyogenes, Str. agalactiae, Str. disgalactiae, S. aureus. Streptococci possess such virulence factors as capsule, fimbriae (M-proteins), toxins, enzymes, staphylococci are capable to form a microcapsule and the biofilm, adhesins, enzymes, toxins, etc. Modern means of specific prevention are represented by polyvalent vaccines, often including inactivated pathogens of the following genera Streptococcus, Staphylococcus, Escherichia.