Studies on Distribution & Drug Resistance of 547 Strains Pathogenic Bacteria Isolated from Respiratory Infection Patients

Objective: To investigate thedistribution and drug resistance of bacteria isolated from patientswiththe respiratory tract infection. Methods: The bacteria isolated were identified by traditional methods and bacteria auto-analysis system. The drug sensitivity tests were done with Kirby Bauer method. Results: Five hundred and forty-seven(547) strains were isolated, and 196 strains were Gram-positive(35.83%), 342 strains were Gram-negative(62.52%), and 9 strains were fungus (1.65%). In isolated Gram-negative bacillus, most are P. Aeruginosa, K.pneumoniae and E. coli, their percentage, are 16.27%, 15.36%, 13.16%, respectively. In isolated Gram-positive coccusbacteria most are S.aureus and S.epidermidis, their percentage respectively are 16.09%, 11.15%.The resistant rate of Gram-positive coccusbacteria to Penicillin was 100%. The resistant rate of Gram-negative bacillus to ampicil was 93.26%. Conclusion: Most of the bacteria isolated from respiratory infecton patients most are Gram-positive and most of them are antibiotics resistant.