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A total of 137 sputa from 95 consecutive cystic fibrosis (CF) patients undergoing routine bacteriological surveillance were analyzed for Pneumocystis carinii colonization using nested PCR. Seven of 95 patients (7.4%) were PCR positive, suggesting that P. carinii carriage may exist among CF patients due to their underlying pulmonary disease.
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Sing et al. (2001) studied this question.
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