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AbstractAs part of the South Swedish Pneumococcal Intervention Project, aimed at reducing the spread of penicillin-resistant pneumococci with MICs for penicillin G0.5mg/l (PRP), all patients in Malmhus county, southern Sweden, with a culture positive for PRP were followed up by means of repeated nasopharyngeal cultures until PRP-negative. If a child carrying PRP attended a day-care centre, nasopharyngeal...