肥 dispensers 的漏洞中介于污染与格拉姆阴性细菌
Ralf Lucassen1, Nicole van Leuven1, Dirk Bockmühl1
1Faculty of Life Sciences, Rhine Waal University of Applied Sciences, Kleve, Germany.
MicrobiologyOpen
|October 25, 2023
概括
可重新填充的肥器非常容易受到细菌污染,污染率为70.2%. 标准剂器中的释放压力机制是这种微生物污染的主要途径.
科学领域:
- 微生物学 微生物学
- 环境健康 环境健康
- 公共卫生 公共卫生
背景情况:
- 液体肥机在家庭和医疗机构中无处不在.
- 之前的研究强调了可重复填充的肥 dispensers 中的细菌污染风险,其率高达25%,细菌数量为10^8 CFU/mL.
- 这些配剂器中的特定污染途径仍然不清楚.
研究的目的:
- 调查和比较可充满的剂器和不可充满的压力剂器中的微生物污染水平.
- 为了确定细菌进入液体肥配送系统的特定途径.
主要方法:
- 从德国的酒店客房收集了104个液体肥 dispensers.
- 使用Vitek 2系统量化细菌数量和确定细菌物种.
- 试验污染了不同类型的分剂器与特定细菌 (P. aeruginosa/P. aeruginosa/P. 菌 (gergoviae) 来追踪污染路径.
主要成果:
- 充电式机的污染率明显高 (70.2%),而非充电式机的污染率高 (10.6%).
- 在受污染的可重新填充剂量 (2.2 x 10^5 CFU/mL) 和非可重新填充剂量 (1.5 x 10^1 CFU/mL) 中,平均细菌数量显著更高.
- 确定了常见的污染物,包括Pluralibacter gergoviae,Pseudomonads,Serratia marcescens,Klebsiella oxytoca和Pasteurella testudinis. 这些污染物是最常见的.
结论:
- 标准剂器中的释放压力机制是微生物污染的关键漏洞.
- 不能再填充的压力机在细菌污染风险方面提供了更安全的替代方案.
- 调查结果强调需要改进剂量设计,以减轻公共和家庭环境中的细菌传播.
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