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2021 ; 27
(2
): 285.e1-285.e4
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gab.com Text
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English Wikipedia
Saliva sample as a non-invasive specimen for the diagnosis of coronavirus disease
2019: a cross-sectional study
#MMPMID32422408
Pasomsub E
; Watcharananan SP
; Boonyawat K
; Janchompoo P
; Wongtabtim G
; Suksuwan W
; Sungkanuparph S
; Phuphuakrat A
Clin Microbiol Infect
2021[Feb]; 27
(2
): 285.e1-285.e4
PMID32422408
show ga
OBJECTIVES: Amid the increasing number of pandemic coronavirus disease 2019
(COVID-19) cases, there is a need for a quick and easy method to obtain a
non-invasive sample for the detection of this novel coronavirus (severe acute
respiratory syndrome coronavirus 2; SARS-CoV-2). We aimed to investigate the
potential use of saliva samples as a non-invasive tool for the diagnosis of
COVID-19. METHODS: From 27 March to 4 April 2020, we prospectively collected
saliva samples and a standard nasopharyngeal and throat swab in persons seeking
care at an acute respiratory infection clinic in a university hospital during the
outbreak of COVID-19. Real-time polymerase chain reaction (RT-PCR) was performed,
and the results of the two specimens were compared. RESULTS: Two-hundred pairs of
samples were collected. Sixty-nine (34.5%) individuals were male, and the median
(interquartile) age was 36 (28-48) years. Using nasopharyngeal and throat swab
RT-PCR as the reference standard, the prevalence of COVID-19 diagnosed by
nasopharyngeal and throat swab RT-PCR was 9.5%. The sensitivity and specificity
of the saliva sample RT-PCR were 84.2% (95% CI 60.4%-96.6%), and 98.9% (95% CI
96.1%-99.9%), respectively. An analysis of the agreement between the two
specimens demonstrated 97.5% observed agreement (? coefficient 0.851, 95% CI
0.723-0.979; p < 0.001). CONCLUSIONS: Saliva might be an alternative specimen for
the diagnosis of COVID-19. The collection is non-invasive, and non-aerosol
generating. This method could facilitate the diagnosis of the disease, given the
simplicity of specimen collection and good diagnostic performance.