We aimed to assess the duration of nasopharyngeal severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) RNA persistence in adults self-confined at home after acute infection; and to identify the associations of SARS-CoV-2 persistence with respiratory virus co-detection and infection transmission. A cross-sectional intra-household study was conducted in metropolitan Barcelona (Spain) during the time period of April to June 2020. Every adult who was the first family member reported as SARS-CoV-2-positive by reverse transcription polymerase chain reaction (RT-PCR) as well as their household child contacts had nasopharyngeal swabs tested by a targeted SARS-CoV-2 RT-PCR and a multiplex viral respiratory panel after a 15 day minimum time lag. Four-hundred and four households (404 adults and 708 children) were enrolled. SARS-CoV-2 RNA was detected in 137 (33.9%) adults and 84 (11.9%) children. Rhinovirus/Enterovirus (RV/EV) was commonly found (83.3%) in co-infection with SARS-CoV-2 in adults. The mean duration of SARS-CoV-2 RNA presence in adults’ nasopharynx was 52 days (range 26–83 days). The persistence of SARS-CoV-2 was significantly associated with RV/EV co-infection (adjusted odds ratio (aOR) 9.31; 95% CI 2.57–33.80) and SARS-CoV-2 detection in child contacts (aOR 2.08; 95% CI 1.24–3.51). Prolonged nasopharyngeal SARS-CoV-2 RNA persistence beyond the acute infection phase was frequent in adults quarantined at home during the first epidemic wave; which was associated with RV/EV co-infection and could enhance intra-household infection transmission.
【저자키워드】 COVID-19, SARS-CoV-2, RT-PCR, rhinovirus, household, 【초록키워드】 coronavirus, cross-sectional, children, RT-PCR, RNA, Nasopharyngeal swab, reverse transcription polymerase chain reaction, polymerase chain reaction, SARS-CoV-2 detection, Adults, Epidemic, Viral, rhinovirus, respiratory virus, nasopharyngeal swabs, persistence, nasopharyngeal, acute infection, nasopharynx, Co-infection, Spain, reverse transcription, SARS-CoV-2 RNA, SARS-CoV-2 RT-PCR, respiratory, multiplex, association, enterovirus, Prolonged, Infection transmission, Contact, Barcelona, family member, Chain Reaction, epidemic wave, time lag, first family, acute respiratory syndrome, adjusted odds ratio, 95% CI, acute respiratory syndrome coronavirus, polymerase chain, ENhance, enrolled, tested, identify, significantly, reported, conducted, viral respiratory, 【제목키워드】 detection,