期刊
MICROORGANISMS
卷 11, 期 4, 页码 -出版社
MDPI
DOI: 10.3390/microorganisms11040965
关键词
sink; water trap; bacterial transmission; self-disinfecting sink; infection control; Pseudomonas aeruginosa; Stenotrophomonas maltophilia; Acinetobacter
类别
This study investigated the bacterial transmission from hospital sinks to patients and the effectiveness of self-disinfecting sinks in reducing this risk. The results showed that hospital sinks can serve as reservoirs of Gram-negative bacteria, and self-disinfecting sinks can reduce the transmission risk. Therefore, installing self-disinfecting sinks in intensive care units is an important measure in preventing nosocomial infection among critically ill patients.
Several retrospective studies have identified hospital sinks as reservoirs of Gram-negative bacteria. The aim of this study was to prospectively investigate the bacterial transmission from sinks to patients and if self-disinfecting sinks could reduce this risk. Samples were collected weekly from sinks (self-disinfecting, treated with boiling water, not treated) and patients in the Burn Centre at Linkoping University Hospital, Sweden. The antibiotic susceptibility of Gram-negative isolates was tested, and eight randomly chosen patient isolates and their connected sink isolates were subjected to whole genome sequencing (WGS). Of 489 sink samples, 232 (47%) showed growth. The most frequent findings were Stenotrophomonas maltophilia (n = 130), Pseudomonas aeruginosa (n = 128), and Acinetobacter spp. (n = 55). Bacterial growth was observed in 20% of the samplings from the self-disinfecting sinks and in 57% from the sinks treated with boiling water (p = 0.0029). WGS recognized one transmission of Escherichia coli sampled from an untreated sink to a patient admitted to the same room. In conclusion, the results showed that sinks can serve as reservoirs of Gram-negative bacteria and that self-disinfecting sinks can reduce the transmission risk. Installing self-disinfecting sinks in intensive care units is an important measure in preventing nosocomial infection among critically ill patients.
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