Detection of new and persistent<i>Streptococcus uberis</i>and<i>Streptococcus dysgalactiae</i>intramammary infections by polymerase chain reaction-based DNA fingerprinting

Abstract excerpt

Polymerase chain reaction-based DNA fingerprinting was used as a tool to differentiate new and persistent Streptococcus uberis and Streptococcus dysgalactiae intramammary infections (IMI) in dairy cows. The same subtype of S. uberis or S. dysgalactiae was detected from some infected mammary glands from one lactation to the next documenting the persistence of these infections. Conversely, some streptococci...

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