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Rat-positive (%) sputum samples with different individual microorganisms. Number of isolates of each species in detected sputum is indicated in brackets. Statistically significant differences (P < 0.05, Fisher exact test) between rat-positive sputa with M. tuberculosis (reference) and rat-positive sputa with nonmycobacterial species are indicated by an asterisk. Rat-positive samples not significantly different from sputa with M. tuberculosis are indicated by “NS”.
