Answers are grounded in this paper and cite their sources.
Of 700 coagulase-positive staphylococcal strains isolated from humans, 692 (98.9%) produced protein A. Of 100 coagulase-negative strains, 2 were protein A-positive.
No takes yet. Share an insight, caveat, or question.
Arne Forsgren (1970) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: