在阿根廷的学校餐厅中发现的甲素耐药的黄金葡萄球菌和凝聚酶阴性葡萄球菌
Juliana González1,2, Luciana Hernandez1, Anahí Tabera2
1Laboratorio de Inmunoquímica y Biotecnología, Centro de Investigación Veterinaria de Tandil (CIVETAN), CONICET, Facultad de Ciencias Veterinarias, UNCPBA, Tandil, Buenos Aires, Argentina.
Foodborne pathogens and disease
|October 19, 2023
概括
在学校的餐厅中发现了耐甲基西林黄金葡萄球菌 (MRSA) 和耐万科米辛黄金葡萄球菌 (VRSA),主要是在食品处理人员身上. 这些发现强调了对这些抗微生物耐药性病原体在学校食品环境中提高警的必要性.
科学领域:
- 食品安全和公共卫生微生物学.
- 抗微生物耐药性 (AMR) 和病原体传播动态.
背景情况:
- 甲素耐药黄金葡萄球菌 (MRSA) 是一个重要的公共卫生问题.
- 粮食链在MRSA传播和AMR中的作用尚未完全理解.
研究的目的:
- 从阿根廷的学校餐厅中分离和鉴定Staphylococcus物种,包括S. aureus.
- 研究孤立菌株中的抗菌素敏感性和耐药性基因.
主要方法:
- 从10所学校餐厅的处理者,表面,食物和空气中采集的样本.
- 隔离和识别Staphylococcus菌株,包括凝血酶阳性 (CoPS) 和凝血酶阴性 (CoNS).
- 抗微生物敏感性测试和对毒素,粘附素和耐药性基因 (mecA,vanA) 的分子调查.
主要成果:
- 隔离了30种葡萄球菌菌株,包括4种S. aureus和26种CoNS.
- 在处理人员的手上发现了七种耐甲基西林的葡萄球菌分离物,其中包括两种MRSA.
- 对青素 (73%) 和红红素 (33%) 观察到高耐药率;11个分离物是多药耐药 (MDR).
- 在两个分离物中检测到vanA基因,这表明了对万科米辛的耐药性.
结论:
- 学校的餐厅可以成为MRSA和抗万科胺素黄金色杆菌 (VRSA) 的储存库.
- 食品处理者是MRSA,VRSA,甲素耐药CoNS和MDR分离物的主要来源.
- 需要高度警,以控制这些病原体在学校用餐环境.
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