Evidence map›Paper›PMID 32694200›Full record

ArticleScience (New York, N.Y.)2020

Serial interval of SARS-CoV-2 was shortened over time by nonpharmaceutical interventions.

Sheikh Taslim Ali, Lin Wang, Eric H Y Lau, Xiao-Ke Xu, Zhanwei Du, Ye Wu, Gabriel M Leung, Benjamin J Cowling

Registry-linked trialOpen access · hybridAbstract read
In one paragraph

Article in Science (New York, N.Y.), 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04816318 (Policy Responses Against the COVID-19 Pandemic in Latin America), which is not on this map. Cited by 205 papers, 8 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
205citing papers in PubMed, 8 pooled it
12.3field-weighted citation impact, top 1% of its field
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.

NCT04816318 unknown statusnot on this mapstarted 2021, after this paper: background citation

Policy Responses Against the COVID-19 Pandemic in Latin America: Interrupted Series Analyses of Local Governments

TypeobservationalSponsorUniversity of ChileRan2021 to 2021Enrolled10,000ConditionsCovid19, Infectious Disease, Death, SARS-CoV InfectionArmsSocial and public health measures against COVID-19, Control
3 · Its place in the literature

Who cites it

205 citing papers in PubMed, 8 syntheses or guidelines pooled it, 395 citations in OpenAlex.

  1. Pooled it
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  8. Key questions for modelling COVID-19 exit strategies.Proceedings. Biological sciences · 2020
    Pooled it
  9. Article
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  12. VIBES: A multiscale modeling approach integrating within-host and between-hosts dynamics in epidemics.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
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  16. Viruses · 2025
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145 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors at 5 institutions in 5 countries.

Sheikh Taslim Ali *WHO Collaborating Centre for Infectious Disease Epidemiology and Control, School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China.ORCID 0000-0002-8631-9076
Lin Wang *Department of Genetics, University of Cambridge, Cambridge CB2 3EH, UK.ORCID 0000-0002-5371-2138
Eric H Y Lau *WHO Collaborating Centre for Infectious Disease Epidemiology and Control, School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China.ORCID 0000-0002-6688-9637
Xiao-Ke XuCollege of Information and Communication Engineering, Dalian Minzu University, Dalian 116600, China.ORCID 0000-0002-9148-3145
Zhanwei DuDepartment of Integrative Biology, University of Texas at Austin, Austin, TX 78705, USA.ORCID 0000-0002-2020-767X
Ye WuSchool of Journalism and Communication, Beijing Normal University, Beijing 100875, China.ORCID 0000-0001-9038-2900
Gabriel M LeungWHO Collaborating Centre for Infectious Disease Epidemiology and Control, School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China.
Benjamin J CowlingWHO Collaborating Centre for Infectious Disease Epidemiology and Control, School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China. bcowling@hku.hk.ORCID 0000-0002-6297-7154
University of Hong Kong · HKBeijing Normal University · CNCentre National de la Recherche Scientifique · FRDalian Minzu University · CNThe University of Texas at Austin · US

Funding

Impacts of Individual and Social Behavior on Influenza Dynamics and ControlU01GM087719 · NIGMS · YALE UNIVERSITY · PI GALVANI, ALISON P, MEYERS, LAUREN ANCEL · 2009 to 2018
$6.3M
NIGMS NIH HHS U01 GM087719
6 · The paper itself

Abstract

Studies of novel coronavirus disease 2019 (COVID-19), which is caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), have reported varying estimates of epidemiological parameters, including serial interval distributions-i.e., the time between illness onset in successive cases in a transmission chain-and reproduction numbers. By compiling a line-list database of transmission pairs in mainland China, we show that mean serial intervals of COVID-19 shortened substantially from 7.8 to 2.6 days within a month (9 January to 13 February 2020). This change was driven by enhanced nonpharmaceutical interventions, particularly case isolation. We also show that using real-time estimation of serial intervals allowing for variation over time provides more accurate estimates of reproduction numbers than using conventionally fixed serial interval distributions. These findings could improve our ability to assess transmission dynamics, forecast future incidence, and estimate the impact of control measures.

Indexed as

Basic Reproduction NumberBetacoronavirusPatient IsolationChinaCoronavirus InfectionsCOVID-19ForecastingHumansIncidencePandemicsPneumonia, ViralSARS-CoV-2Time Factors

Identifiers

PMID32694200
PMCPMC7402628
OpenAlexW3045248985

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

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.