ĐÁNH GIÁ MỨC ĐỘ NHIỄM KHUẨN VÀ KIỂM TRA TÍNH ĐỀ KHÁNG KHÁNG SINH CỦA VI KHUẨN GÂY BỆNH PHÂN LẬP ĐƯỢC TỪ MICROPHONE - DỤNG CỤ HỖ TRỢ DẠY HỌC TẠI MỘT SỐ TRƯỜNG ĐẠI HỌC TẠI TP.HCM

Abstract

Background: K.pneumoniae, S.pneumonia, S.aureus, P.aeruginosa are respiratory pathogens found in the oral cavity, through saliva glands and transmitted to microphones during usage, continuing to spread the disease from one person to another. Unsanitary use of microphones is one of the causes of spreading infectious diseases through respiratory routes. Objective: Assessment of bacterial contamination levels and antibiotic resistance testing of pathogenic bacteria isolated from microphones - teaching aids at 3 universities in Ho Chi Minh City. Methods: Microphones - teaching aids at 3 surveyed universities, cross-sectional design description method. Results: Surveying 255 microphone samples, cultured, isolating bacteria on blood agar, the result showed 55.69% (142/255) of samples were contaminated, the infection rates at the three universities 1, 2, and 3 were 58.54% (48/82); 66.94% (83/124); 22.45% (11/49) respectively. Among these, (95.07%) 135/142 samples were contaminated with Staphylococci, 4.93% (7/142) with Pseudomonas sp, no samples were contaminated with S. pneumoniae and K. pneumoniae. Among the Staphylococci samples, 5.19% (7/135) were contaminated with S.aureus, 45.93% (62/135) with S.epidermidis, 48.89% (66/135) with other Staphylococci. Three out of seven S. aureus strains isolated were simultaneously resistant to four types of antibiotics Azirthromycin, Erythromycin, Gentamycin, and Penicillin at the same rate (28.57%), two strains were resistant to Clindamycin (28.57%), one strain was resistant to Ciprofloxacin (14.28%), and one strain was resistant to Tetracycline (14.28%). Pseudomonas sp, most were susceptible to all antibiotics except for one strain which was resistant to Gentamicin. Conclusion: The bacterial contamination level of the microphone is 55.69%, including 5.19% samples contaminated with S. aureus and 4.93% samples contaminated with Pseudomonas sp. No detection of K. pneumoniae and S. pneumoniae. Three strains of S. aureus are resistant to four types of antibiotics simultaneously: Azithromycin, Erythromycin, Gentamicin, and Penicillin. Two strains are resistant to Clindamycin, one strain is resistant to Ciprofloxacin, and one strain is resistant to Tetracycline. Most Pseudomonas sp. are sensitive to antibiotics, except for one strain resistant to Gentamicin