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PFGE analysis of 25 macrolide-resistant S. pneumoniae isolates showing 12 groupings of 49 isolates. The remaining 15 isolates are not closely related to one another and represent unique PFGE profiles. The seven isolates in group G are closely related or identical to international clone Taiwan19F-14. T, isolate obtained from surveillance throat culture; Pn, isolate obtained from patient with disease.
