Evidence map›Paper›PMID 32493466›Full record

ArticleBMC medicine2020

Real-time monitoring the transmission potential of COVID-19 in Singapore, March 2020.

Amna Tariq, Yiseul Lee, Kimberlyn Roosa, Seth Blumberg, Ping Yan, Stefan Ma, Gerardo Chowell

Abstract read
In one paragraph

Article in BMC medicine, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 66 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
66citing papers in PubMed, 3 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

66 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  1. Pooled it
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  4. Viruses · 2025
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6 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors.

Amna TariqDepartment of Population Health Sciences, School of Public Health, Georgia State University, Atlanta, GA, 30303, USA. atariq1@student.gsu.edu.
Yiseul LeeDepartment of Population Health Sciences, School of Public Health, Georgia State University, Atlanta, GA, 30303, USA.
Kimberlyn RoosaDepartment of Population Health Sciences, School of Public Health, Georgia State University, Atlanta, GA, 30303, USA.
Seth BlumbergF. I. Proctor Foundation, University of California, San Francisco, CA, USA.
Ping YanInfectious Disease Prevention and Control Branch, Public Health Agency of Canada, Ottawa, Canada.
Stefan MaEpidemiology and Disease Control Division, Public Health Group, Ministry of Health Singapore, Singapore, Singapore.
Gerardo ChowellDepartment of Population Health Sciences, School of Public Health, Georgia State University, Atlanta, GA, 30303, USA.

Funding

Ebola modeling: behavior, asymptomatic infection, and contacts (2019-nCoV Admin Supplement)R01GM130900 · NIGMS · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI PORCO, TRAVIS CHRISTIAN · 2019 to 2022
$1.6M
National Science Foundation 1610429National Science Foundation 1633381NIGMS NIH HHS R01 GM130900NIH HHS R01 GM 130900
6 · The paper itself

Abstract

backgroundAs of March 31, 2020, the ongoing COVID-19 epidemic that started in China in December 2019 is now generating local transmission around the world. The geographic heterogeneity and associated intervention strategies highlight the need to monitor in real time the transmission potential of COVID-19. Singapore provides a unique case example for monitoring transmission, as there have been multiple disease clusters, yet transmission remains relatively continued.

methodsHere we estimate the effective reproduction number, R

resultsThe local incidence curve displays sub-exponential growth dynamics, with the reproduction number following a declining trend and reaching an estimate at 0.7 (95% CI 0.3, 1.0) during the first transmission wave by February 14, 2020, while the overall R based on the cluster size distribution as of March 17, 2020, was estimated at 0.6 (95% CI 0.4, 1.02). The overall mean reporting delay was estimated at 6.4 days (95% CI 5.8, 6.9), but it was shorter among imported cases compared to local cases (mean 4.3 vs. 7.6 days, Wilcoxon test, p < 0.001).

conclusionThe trajectory of the reproduction number in Singapore underscores the significant effects of successful containment efforts in Singapore, but it also suggests the need to sustain social distancing and active case finding efforts to stomp out all active chains of transmission.

Indexed as

BetacoronavirusCoronavirus InfectionsCOVID-19HumansPandemicsPneumonia, ViralSARS-CoV-2SingaporeCluster distributionCOVID-19Reporting delayReproduction numberSARS-CoV-2SingaporeTransmission heterogeneityTransmission potential

Identifiers

PMID32493466
PMCPMC7268586

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.