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Article: SARS-CoV-2 shedding and seroconversion among passengers quarantined after disembarking a cruise ship: a case series

TitleSARS-CoV-2 shedding and seroconversion among passengers quarantined after disembarking a cruise ship: a case series
Authors
Keywordsadult
aged
antibody response
asymptomatic infection
case study
Issue Date2020
PublisherElsevier: Lancet. The Journal's web site is located at http://www.elsevier.com/locate/j.lancetid
Citation
The Lancet Infectious Diseases, 2020, v. 20 n. 9, p. 1051-1060 How to Cite?
AbstractBackground: A cruise ship is a closed-off environment that simulates the basic functioning of a city in terms of living conditions and interpersonal interactions. Thus, the Diamond Princess cruise ship, which was quarantined because of an onboard outbreak of COVID-19 in February, 2020, provides an opportunity to define the shedding pattern of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and patient antibody responses before and after the onset of symptoms. Methods: We recruited adult (≥18 years) passengers from Hong Kong who had been on board the Diamond Princess cruise ship docked in Yokohama, Japan in February, 2020. All participants had been found to be negative for SARS-CoV-2 by RT-PCR 4 days before disembarking and were transferred to further quarantine in a public estate in Hong Kong, where they were recruited. Participants were prospectively screened by quantitative RT-PCR (RT-qPCR) of nasopharyngeal and throat swabs, and serum IgG and IgM against internal nucleoprotein and the surface spike receptor-binding protein (RBD) of SARS-CoV-2 at baseline (upon entering quarantine) and on days 4, 8, and 12 of quarantine. Findings: On Feb 22, 2020, 215 adults were recruited, of whom nine (4%; 95% CI 2–8) were positive for SARS-CoV-2 by RT-qPCR or serology and were hospitalised. Of these nine patients, nasopharyngeal swab RT-qPCR was positive in eight patients (89%; 57–99) at baseline. All nine patients were positive for anti-RBD IgG by day 8. Eight (89%; 57–99) were simultaneously positive for nasopharyngeal swab RT-PCR and anti-RBD IgG. One patient who was positive for anti-RBD IgG and had a negative viral load had multifocal peripheral ground-glass changes on high-resolution CT that were typical of COVID-19. Five patients (56%; 27–81) with ground-glass changes on high-resolution CT were found to have higher anti-nucleoprotein-IgG OD values on day 8 and 12 and anti-RBD IgG OD value on day 12 than patients without ground-glass changes. Six (67%; 35–88) patients remained asymptomatic throughout the 14-day quarantine period. Interpretation: Patients with COVID-19 can develop asymptomatic lung infection with viral shedding and those with evidence of pneumonia on imaging tend to have an increased antibody response. Positive IgG or IgM confirmed infection of COVID-19 in both symptomatic and asymptomatic patients. A combination of RT-PCR and serology should be implemented for case finding and contact tracing to facilitate early diagnosis, prompt isolation, and treatment. Funding: Shaw Foundation Hong Kong; Sanming-Project of Medicine (Shenzhen); High Level-Hospital Program (Guangdong Health Commission).
Persistent Identifierhttp://hdl.handle.net/10722/289780
ISSN
2019 Impact Factor: 24.446
2015 SCImago Journal Rankings: 11.233
PubMed Central ID

 

DC FieldValueLanguage
dc.contributor.authorHung, IFN-
dc.contributor.authorCheng, VCC-
dc.contributor.authorLi, X-
dc.contributor.authorTam, AR-
dc.contributor.authorHung, DLL-
dc.contributor.authorChiu, KHY-
dc.contributor.authorYip, CCY-
dc.contributor.authorCai, JP-
dc.contributor.authorHo, DTY-
dc.contributor.authorWong, SC-
dc.contributor.authorLeung, SSM-
dc.contributor.authorChu, MY-
dc.contributor.authorTang, MOY-
dc.contributor.authorChen, JHK-
dc.contributor.authorPoon, RWS-
dc.contributor.authorFung, AYF-
dc.contributor.authorZhang, RR-
dc.contributor.authorYan, EYW-
dc.contributor.authorChen, LL-
dc.contributor.authorChoi, CYK-
dc.contributor.authorLeung, KH-
dc.contributor.authorChung, TWH-
dc.contributor.authorLam, SHY-
dc.contributor.authorLam, TPW-
dc.contributor.authorChan, JFW-
dc.contributor.authorChan, KH-
dc.contributor.authorWu, TC-
dc.contributor.authorHo, PL-
dc.contributor.authorChan, JWM-
dc.contributor.authorLau, CS-
dc.contributor.authorTo, KKW-
dc.contributor.authorYuen, KY-
dc.date.accessioned2020-10-22T08:17:22Z-
dc.date.available2020-10-22T08:17:22Z-
dc.date.issued2020-
dc.identifier.citationThe Lancet Infectious Diseases, 2020, v. 20 n. 9, p. 1051-1060-
dc.identifier.issn1473-3099-
dc.identifier.urihttp://hdl.handle.net/10722/289780-
dc.description.abstractBackground: A cruise ship is a closed-off environment that simulates the basic functioning of a city in terms of living conditions and interpersonal interactions. Thus, the Diamond Princess cruise ship, which was quarantined because of an onboard outbreak of COVID-19 in February, 2020, provides an opportunity to define the shedding pattern of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and patient antibody responses before and after the onset of symptoms. Methods: We recruited adult (≥18 years) passengers from Hong Kong who had been on board the Diamond Princess cruise ship docked in Yokohama, Japan in February, 2020. All participants had been found to be negative for SARS-CoV-2 by RT-PCR 4 days before disembarking and were transferred to further quarantine in a public estate in Hong Kong, where they were recruited. Participants were prospectively screened by quantitative RT-PCR (RT-qPCR) of nasopharyngeal and throat swabs, and serum IgG and IgM against internal nucleoprotein and the surface spike receptor-binding protein (RBD) of SARS-CoV-2 at baseline (upon entering quarantine) and on days 4, 8, and 12 of quarantine. Findings: On Feb 22, 2020, 215 adults were recruited, of whom nine (4%; 95% CI 2–8) were positive for SARS-CoV-2 by RT-qPCR or serology and were hospitalised. Of these nine patients, nasopharyngeal swab RT-qPCR was positive in eight patients (89%; 57–99) at baseline. All nine patients were positive for anti-RBD IgG by day 8. Eight (89%; 57–99) were simultaneously positive for nasopharyngeal swab RT-PCR and anti-RBD IgG. One patient who was positive for anti-RBD IgG and had a negative viral load had multifocal peripheral ground-glass changes on high-resolution CT that were typical of COVID-19. Five patients (56%; 27–81) with ground-glass changes on high-resolution CT were found to have higher anti-nucleoprotein-IgG OD values on day 8 and 12 and anti-RBD IgG OD value on day 12 than patients without ground-glass changes. Six (67%; 35–88) patients remained asymptomatic throughout the 14-day quarantine period. Interpretation: Patients with COVID-19 can develop asymptomatic lung infection with viral shedding and those with evidence of pneumonia on imaging tend to have an increased antibody response. Positive IgG or IgM confirmed infection of COVID-19 in both symptomatic and asymptomatic patients. A combination of RT-PCR and serology should be implemented for case finding and contact tracing to facilitate early diagnosis, prompt isolation, and treatment. Funding: Shaw Foundation Hong Kong; Sanming-Project of Medicine (Shenzhen); High Level-Hospital Program (Guangdong Health Commission).-
dc.languageeng-
dc.publisherElsevier: Lancet. The Journal's web site is located at http://www.elsevier.com/locate/j.lancetid-
dc.relation.ispartofThe Lancet Infectious Diseases-
dc.subjectadult-
dc.subjectaged-
dc.subjectantibody response-
dc.subjectasymptomatic infection-
dc.subjectcase study-
dc.titleSARS-CoV-2 shedding and seroconversion among passengers quarantined after disembarking a cruise ship: a case series-
dc.typeArticle-
dc.identifier.emailHung, IFN: ivanhung@hkucc.hku.hk-
dc.identifier.emailCheng, VCC: vcccheng@hkucc.hku.hk-
dc.identifier.emailHung, DLL: dh2552@hku.hk-
dc.identifier.emailChiu, KHY: hychiu14@hku.hk-
dc.identifier.emailYip, CCY: yipcyril@hku.hk-
dc.identifier.emailCai, JP: caijuice@hku.hk-
dc.identifier.emailHo, DTY: tipyinho@hku.hk-
dc.identifier.emailWong, SC: shchwong@hku.hk-
dc.identifier.emailLeung, SSM: smsleung@hku.hk-
dc.identifier.emailTang, MOY: medtoy@hku.hk-
dc.identifier.emailChen, JHK: jonchk@hku.hk-
dc.identifier.emailPoon, RWS: rosana@hkucc.hku.hk-
dc.identifier.emailFung, AYF: agnes_fung@hku.hk-
dc.identifier.emailZhang, RR: zhangrq@hku.hk-
dc.identifier.emailChoi, CYK: yeekic@hku.hk-
dc.identifier.emailLeung, KH: khl17@hku.hk-
dc.identifier.emailChan, JFW: jfwchan@hku.hk-
dc.identifier.emailChan, KH: chankh2@hkucc.hku.hk-
dc.identifier.emailHo, PL: plho@hku.hk-
dc.identifier.emailLau, CS: cslau@hku.hk-
dc.identifier.emailTo, KKW: kelvinto@hku.hk-
dc.identifier.emailYuen, KY: kyyuen@hkucc.hku.hk-
dc.identifier.authorityHung, IFN=rp00508-
dc.identifier.authorityYip, CCY=rp01721-
dc.identifier.authorityChan, JFW=rp01736-
dc.identifier.authorityChan, KH=rp01921-
dc.identifier.authorityHo, PL=rp00406-
dc.identifier.authorityLau, CS=rp01348-
dc.identifier.authorityTo, KKW=rp01384-
dc.identifier.authorityYuen, KY=rp00366-
dc.description.naturelink_to_OA_fulltext-
dc.identifier.doi10.1016/S1473-3099(20)30364-9-
dc.identifier.pmid32539986-
dc.identifier.pmcidPMC7292581-
dc.identifier.scopuseid_2-s2.0-85086432721-
dc.identifier.hkuros317153-
dc.identifier.volume20-
dc.identifier.issue9-
dc.identifier.spage1051-
dc.identifier.epage1060-
dc.publisher.placeUnited Kingdom-

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