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The DOI matches its Crossref record; 4 of the 4 references it cites were found in a registry or an index.

Epidemiologic Features and Clinical Course of Patients Infected With SARS-CoV-2 in Singapore

Open access
Young, Barnaby Edward, Ong, Sean Wei Xiang, Kalimuddin, Shirin, Low, Jenny G., Tan, Seow Yen, Loh, Jiashen, Ng, Oon-Tek, Marimuthu, Kalisvar, Ang, Li Wei, Mak, Tze Minn, Lau, Sok Kiang, Anderson, Danielle E., Chan, Kian Sing, Tan, Thean Yen, Ng, Tong Yong, Cui, Lin, Said, Zubaidah, Kurupatham, Lalitha, Chen, Mark I-Cheng, Chan, Monica, Vasoo, Shawn, Wang, Lin-Fa, Tan, Boon Huan, Lin, Raymond Tzer Pin, Lee, Vernon Jian Ming, Leo, Yee-Sin, Lye, David Chien, for the Singapore 2019 Novel Coronavirus Outbreak Research Team·2020·JAMA

Abstract

Importance: Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) emerged in Wuhan, China, in December 2019 and has spread globally with sustained human-to-human transmission outside China. Objective: To report the initial experience in Singapore with the epidemiologic investigation of this outbreak, clinical features, and management. Design, Setting, and Participants: Descriptive case series of the first 18 patients diagnosed with polymerase chain reaction (PCR)-confirmed SARS-CoV-2 infection at 4 hospitals in Singapore from January 23 to February 3, 2020; final follow-up date was February 25, 2020. Exposures: Confirmed SARS-CoV-2 infection. Main Outcomes and Measures: Clinical, laboratory, and radiologic data were collected, including PCR cycle threshold values from nasopharyngeal swabs and viral shedding in blood, urine, and stool. Clinical course was summarized, including requirement for supplemental oxygen and intensive care and use of empirical treatment with lopinavir-ritonavir. Results: Among the 18 hospitalized patients with PCR-confirmed SARS-CoV-2 infection (median age, 47 years; 9 [50%] women), clinical presentation was an upper respiratory tract infection in 12 (67%), and viral shedding from the nasopharynx was prolonged for 7 days or longer among 15 (83%). Six individuals (33%) required supplemental oxygen; of these, 2 required intensive care. There were no deaths. Virus was detectable in the stool (4/8 [50%]) and blood (1/12 [8%]) by PCR but not in urine. Five individuals requiring supplemental oxygen were treated with lopinavir-ritonavir. For 3 of the 5 patients, fever resolved and supplemental oxygen requirement was reduced within 3 days, whereas 2 deteriorated with progressive respiratory failure. Four of the 5 patients treated with lopinavir-ritonavir developed nausea, vomiting, and/or diarrhea, and 3 developed abnormal liver function test results. Conclusions and Relevance: Among the first 18 patients diagnosed with SARS-CoV-2 infection in Singapore, clinical presentation was frequently a mild respiratory tract infection. Some patients required supplemental oxygen and had variable clinical outcomes following treatment with an antiretroviral agent.

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Research works printed but not linked: 13

  1. Lu, 2020, Genomic characterisation and epidemiology of 2019 novel coronavirus: implications for virus origins and receptor binding., Lancet, 395, 565, 10.1016/S0140-6736(20)30251-8 · DOI · Paper page
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Metadata

Authors
Young, B. E., Ong, S. W. X., Kalimuddin, S., Low, J. G., Tan, S. Y., Loh, J., Ng, O.-T., Marimuthu, K., Ang, L. W., Mak, T. M., Lau, S. K., Anderson, D. E., Chan, K. S., Tan, T. Y., Ng, T. Y., Cui, L., Said, Z., Kurupatham, L., Chen, M. I.-C., Chan, M., Vasoo, S., Wang, L.-F., Tan, B. H., Lin, R. T. P., Lee, V. J. M., Leo, Y.-S., Lye, D. C., & for the Singapore 2019 Novel Coronavirus Outbreak Research Team
Venue
JAMA
Published
2020-04-21
Volume
323
Issue
15
Pages
1488
ISSN
  • 0002-9955 (ISSN-L)
  • 0098-7484
OpenAlex
W3010338568
Cited by
2,059
References
4
FWCI
58.76
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Epidemiologic Features and Clinical Course of Patients Infected With SARS-CoV-2 in Singapore. https://app.cochat.ai/papers/10.1001/jama.2020.3204
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Young, B. E., Ong, S. W. X., Kalimuddin, S., Low, J. G., Tan, S. Y., Loh, J., Ng, O.-T., Marimuthu, K., Ang, L. W., Mak, T. M., Lau, S. K., Anderson, D. E., Chan, K. S., Tan, T. Y., Ng, T. Y., Cui, L., Said, Z., Kurupatham, L., Chen, M. I.-C., . . . for the Singapore 2019 Novel Coronavirus Outbreak Research Team. (2020). Epidemiologic Features and Clinical Course of Patients Infected With SARS-CoV-2 in Singapore. JAMA. https://doi.org/10.1001/jama.2020.3204

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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