An Overview of the Temporal Shedding of SARS-CoV-2 RNA in Clinical Specimens

Frontiers in Public Health

article

Khrystyna Zhurakivska¹  Giuseppe Troiano¹  Vito Carlo Alberto Caponio¹  Lorenzo Lo Muzio¹ 

[1] Department of Clinical and Experimental Medicine, University of Foggia

关键词: coronavirus 2019;    Covid-19;    SARS-CoV-2;    specimens;    pharyngeal swabs;    feces;    sputum;   

DOI  :  10.3389/fpubh.2020.00487

学科分类：社会科学、人文和艺术（综合）

来源: Frontiers

【 摘 要 】

Coronavirus disease 2019 quickly spread in China and has, since March 2020 become a pandemic, causing hundreds of thousands of deaths worldwide. The causative agent was promptly isolated and named SARS-CoV-2. Scientific efforts are related to identifying the best clinical management of these patients, but also in understanding their infectivity in order to limit the spread of the virus. Aimed at identifying viral RNA in the various compartments of the organism of sick subjects, diagnostic tests are carried out. However, the accuracy of such tests varies depending on the type of specimen used and the time of illness at which they are performed. This review of the literature aims to summarize the preliminary findings reported in studies on Covid-19 testing. The results highlight how the pharyngeal swab is highly sensitive in the first phase of the disease, while in the advanced stages, other specimens should be considered, such as sputum, or even stool to detect SARS-CoV-2. It highlights that most patients already reach the peak of the viral load in the upper airways within the first days of displaying symptoms, which thereafter tend to decrease. This suggests that many patients may already be infectious before symptoms start to appear.

【 授权许可】

CC BY