title: Concurrent infection or colonization by different strains of Staphylococcus pyogenes confirmed or revealed by phage typing.
mesh_terms: D001434:Bacteriophage Typing; D006801:Humans; D013204:Staphylococcus Phages; D013290:Streptococcal Infections / Q000175:diagnosis*; D013297:Streptococcus pyogenes / Q000302:isolation & purification*