Patients in surgical clinics who have undergone a variety of operations, the personnel in these clinics, along with the personnel in clinics of internal medicine, have been screened for potentially pathogenic bacteria carried in their orophyrangeal and nasal secretions and on their hands. 58% of the patients, 54% of those in the surgical clinics and 52% of the personnel in the clinics of internal medicine were found to be carriers. A relatively high rate of carriers of potentially pathogenic gram-negative rods was found in the hospital environment. Except for proteus, no significant pattern was observed with regard to distribution of bacteria among the various groups. Antibiotic resistance of S. aureus and S. albus haemolyticus strains isolated in the hospital environment was found to be higher in strains from patients than in those from personnel. It was found that 14% of typable S. aureus strains were in group I, 39% in group II and 46% in group III.
1,112 medical students, 127 2nd year school of dentistry students, 269 2nd year school of pharmacy students and 155 4th year school of science students were screened for the presence of potentially pathogenic bacteria in their oral and nasal flora. 691 potentially pathogenic bacteria or yeast strains have been isolated of which 508 were from oral secretions and 183 were from nasal secretions. 508 of the strains were Staphylococcus aureus, 59 β-hemolytic streptococci, 88 Escherichia, 13 Pseudomonas aeruginosa, 5 Achromobacter, 2 Klebsiella, 2 Haemophilus para-haemolyticus, 3 Candida albicans and 11 other Candidas.
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