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Environmental surface and air contamination in severe acute respiratory syndrome
coronavirus 2 (SARS-CoV-2) patient rooms by disease severity
#MMPMID34316568
Nakamura K
; Morioka S
; Kutsuna S
; Iida S
; Suzuki T
; Kinoshita N
; Suzuki T
; Sugiki Y
; Okuhama A
; Kanda K
; Wakimoto Y
; Ujiie M
; Yamamoto K
; Ishikane M
; Moriyama Y
; Ota M
; Nakamoto T
; Ide S
; Nomoto H
; Akiyama Y
; Miyazato Y
; Hayakawa K
; Saito S
; Ohmagari N
Infect Prev Pract
2020[Dec]; 2
(4
): 100098
PMID34316568
show ga
BACKGROUND: The coronavirus disease 2019 (COVID-19) continues to spread around
the world. In addition to community-acquired infections, nosocomial infections
are also a major social concern. The likelihood of environmental contamination
and transmission of the virus based on disease severity is unknown. METHODS: We
collected nasopharyngeal, environmental and air samples from patients with
COVID-19 admitted to the National Centre for Global Health and Medicine between
January 29(th) and February 29(th), 2020. The patients were classified by
severity of disease. The collected samples were tested using severe acute
respiratory syndrome coronavirus 2 (SARS-CoV-2) real-time reverse transcription
polymerase chain reaction (real-time RT-PCR). RESULTS: SARS-CoV-2 was not
detected in a subset of 11 air samples. Of the 141 environmental samples
collected from three patient bays and two single rooms, four samples tested
positive for SARS-CoV-2 by real-time RT-PCR. Detections were made on the surface
of a stethoscope used in the care of a patient with severe disease, on the
intubation tube of a patient classified as critical (and on ventilator
management), and on the surface of a gown worn by the nurse providing care.
CONCLUSIONS: Regardless of the patients' disease severity, SARS-CoV-2 was
detected on very few environmental surfaces. However, detection of SARS-CoV-2 on
stethoscopes used in the care of multiple patients and on the surface of gowns
worn by clinical staff indicates that medical devices may be linked to the spread
of infection.