Evidence map›Paper›PMID 33199426›Full record

ArticleBMJ open2020

Predicting the local COVID-19 outbreak around the world with meteorological conditions: a model-based qualitative study.

Biqing Chen, Hao Liang, Xiaomin Yuan, Yingying Hu, Miao Xu, Yating Zhao, Binfen Zhang, Fang Tian, Xuejun Zhu

Abstract readMulticenter Study
In one paragraph

Article in BMJ open, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed, 1 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

27 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  12. COVID-19 and environmental concerns: A rapid review.Renewable & sustainable energy reviews · 2021
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  17. Severe acute respiratory syndrome coronavirus-2 medical solid waste treatment: A need for efficient and effective strategies in low-resourced settings.Waste management & research : the journal of the International Solid Wastes and Public Cleansing Association, ISWA · 2021
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors.

Biqing ChenCentral Laboratory/ Research Center of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China.ORCID 0000-0003-1443-1023
Hao LiangDepartment of Hematology, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China.
Xiaomin YuanDepartment of Colorectal Surgery, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China.
Yingying HuDepartment of Hematology, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China.
Miao XuDepartment of Hematology, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China.
Yating ZhaoSchool of Atmospheric Sciences, Nanjing University, Nanjing, Jiangsu, China.
Binfen ZhangDepartment of Hematology, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China.
Fang TianCentral Laboratory/ Research Center of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China.
Xuejun ZhuDepartment of Hematology, Research Center of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China zhuxuejun@njucm.edu.cn.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesThis study aims to investigate the relationship between daily weather and transmission rate of SARS-CoV-2, and to develop a generalised model for future prediction of the COVID-19 spreading rate for a certain area with meteorological factors.

designA retrospective, qualitative study. METHODS AND ANALYSIS: We collected 382 596 records of weather data with four meteorological factors, namely, average temperature, relative humidity, wind speed, and air visibility, and 15 192 records of epidemic data with daily new confirmed case counts (1 587 209 confirmed cases in total) in nearly 500 areas worldwide from 20 January 2020 to 9 April 2020. Epidemic data were modelled against weather data to find a model that could best predict the future outbreak.

resultsSignificant correlation of the daily new confirmed case count with the weather 3 to 7 days ago were found. SARS-CoV-2 is easy to spread under weather conditions of average temperature at 5 to 15°C, relative humidity at 70% to 80%, wind speed at 1.5 to 4.5 m/s and air visibility less than 10 statute miles. A short-term model with these four meteorological variables was derived to predict the daily increase in COVID-19 cases; and a long-term model using temperature to predict the pandemic in the next week to month was derived. Taken China as a discovery dataset, it was well validated with worldwide data. According to this model, there are five viral transmission patterns, 'restricted', 'controlled', 'natural', 'tropical' and 'southern'. This model's prediction performance correlates with actual observations best (over 0.9 correlation coefficient) under natural spread mode of SARS-CoV-2 when there is not much human interference such as epidemic control.

conclusionsThis model can be used for prediction of the future outbreak, and illustrating the effect of epidemic control for a certain area.

Indexed as

PandemicsQualitative ResearchSARS-CoV-2WeatherAir PollutionChinaCOVID-19HumansPrognosisRetrospective StudiesCOVID-19epidemiologyinfection controlpublic health

Identifiers

PMID33199426
PMCPMC7670553

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.