Air dispersal of meticillin-resistant Staphylococcus aureus in residential care homes for the elderly: implications for transmission during the COVID-19 pandemic.
J Hosp Infect
; 123: 52-60, 2022 May.
Статья
в английский
| MEDLINE | ID: covidwho-1757533
ABSTRACT
BACKGROUND:
Meticillin-resistant Staphylococcus aureus (MRSA) infections are rampant in hospitals and residential care homes for the elderly (RCHEs).AIM:
To analyse the prevalence of MRSA colonization among residents and staff, and degree of environmental contamination and air dispersal of MRSA in RCHEs.METHODS:
Epidemiological and genetic analysis by whole-genome sequencing (WGS) in 12 RCHEs in Hong Kong.FINDINGS:
During the COVID-19 pandemic (from September to October 2021), 48.7% (380/781) of RCHE residents were found to harbour MRSA at any body site, and 8.5% (8/213) of staff were nasal MRSA carriers. Among 239 environmental samples, MRSA was found in 39.0% (16/41) of randomly selected resident rooms and 31.3% (62/198) of common areas. The common areas accessible by residents had significantly higher MRSA contamination rates than those that were not accessible by residents (37.2%, 46/121 vs. 22.1%, 17/177, P=0.028). Of 124 air samples, nine (7.3%) were MRSA-positive from four RCHEs. Air dispersal of MRSA was significantly associated with operating indoor fans in RCHEs (100%, 4/4 vs. 0%, 0/8, P=0.002). WGS of MRSA isolates collected from residents, staff and environmental and air samples showed that ST 1047 (CC1) lineage 1 constituted 43.1% (66/153) of all MRSA isolates. A distinctive predominant genetic lineage of MRSA in each RCHE was observed, suggestive of intra-RCHE transmission rather than clonal acquisition from the catchment hospital.CONCLUSION:
MRSA control in RCHEs is no less important than in hospitals. Air dispersal of MRSA may be an important mechanism of dissemination in RCHEs with operating indoor fans.ключевые слова
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Коллекция:
Международные базы данных
база данных:
MEDLINE
Основная тема:
Staphylococcal Infections
/
Methicillin-Resistant Staphylococcus aureus
/
COVID-19
Тип исследования:
Экспериментальные исследования
/
Наблюдательное исследование
/
Рандомизированные контролируемые испытания
Пределы темы:
Пожилые
/
Люди
Язык:
английский
Журнал:
J Hosp Infect
Год:
2022
Тип:
Статья
Аффилированная страна:
J.jhin.2022.02.012
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