Neutralisation of immunologically distinct staphylococcal delta haemolysins by antibodies

Antibodies against delta-haemolysin from Staphylococcus strain CN4108 (Newman) did not neutralise delta-haemolysin from the canine strain of S. aureus CN7450 to the same extent as delta-haemolysin prepared from S. aureus strain CN4108. This is additional evidence for the immunological distinctness of delta-haemolysin from these two S. aureus strains of human and canine origin.