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Of these, 276 isolates were<jats:italic>Streptococcus equisimilis<\/jats:italic>. 23<jats:italic>S. milleri<\/jats:italic>and nine<jats:italic>S. zooepidemicus<\/jats:italic>. Isolates of<jats:italic>S. equisimilis<\/jats:italic>in the African collection, though few, gave higher rates of lactose and raffinose fermentation, aesculin hydrolysis and positive \u03b1-galactosidase reactions than those from elsewhere. Erythromycin resistance was found in 1\u00b79% of the English isolates of<jats:italic>S. equisimilis<\/jats:italic>.Strains from superficial infections accounted for 88 % of the collection and were most commonly isolated from the upper respiratory tract, skin or wounds. Amongst the 36 patients yielding isolates from deep sites<jats:italic>S. equisimilis<\/jats:italic>was found in septicaemia, cellulitis, abscess, peritonitis, septic arthritis, pneumonia, mycotic aneurysm and acute epiglottitis.<jats:italic>S. milleri<\/jats:italic>was found in abdominal abscesses, peritonitis, pleural empyema and osteomyelitis and<jats:italic>S. zooepidemicus<\/jats:italic>was found in septicaemia, pneumonia, meningitis and septic arthritis. Within the collection an unselected general catchment of 214 isolates of group C streptococci from the laboratories in Yorkshire showed the following species: from 199 superficial infections 94%<jats:italic>S. equisimilis<\/jats:italic>. 5%<jats:italic>S. milleri<\/jats:italic>and 1%<jats:italic>S. zooepidemicus<\/jats:italic>and 15 patients with deeper, more agressive infections 67, 27 and 6\u00b77% of these species respectively.<\/jats:p>","DOI":"10.1017\/s0950268800030090","type":"journal-article","created":{"date-parts":[[2009,5,15]],"date-time":"2009-05-15T09:29:35Z","timestamp":1242379775000},"page":"379-390","source":"Crossref","is-referenced-by-count":56,"title":["Group C streptococci in human infection: a study of 308 isolates with clinical correlations"],"prefix":"10.1017","volume":"102","author":[{"given":"M.","family":"Barnham","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"J.","family":"Kerby","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"R. 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