ArticleTransboundary and emerging diseases2020
Humidity is a consistent climatic factor contributing to SARS-CoV-2 transmission.
Article in Transboundary and emerging diseases, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers, 2 of them syntheses that pooled it.
What it found
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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.
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.
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Who cites it
26 citing papers in PubMed, 2 syntheses or guidelines pooled it, 58 citations in OpenAlex.
- Meteorological conditions are heterogeneous factors for COVID-19 risk in China.Environmental research · 2021Pooled it
- Airborne spread of infectious SARS-CoV-2: Moving forward using lessons from SARS-CoV and MERS-CoV.The Science of the total environment · 2021Pooled it
- Post-Pandemic Resurgence and Seasonal Patterns of Influenza Viruses and Respiratory Syncytial Virus in Arequipa, Peru (2021-2023).Epidemiologia (Basel, Switzerland) · 2026Article
- Nonlinear effects of meteorological factors on foodborne disease outbreaks in yantai from 2014 to 2024.Scientific reports · 2025Article
- Survival and transmission fitness of SARS-CoV-2 over the time-of-flight in an aerosolization chamber.Npj viruses · 2025Article
- Assessing eco-geographic influences on COVID-19 transmission: a global analysis.Scientific reports · 2024Article
- Airborne transmission efficiency of SARS-CoV-2 in Syrian hamsters is not influenced by environmental conditions.Npj viruses · 2024Article
- What are the Effects of Climate Variables on COVID-19 Pandemic? A Systematic Review and Current Update.Advanced biomedical research · 2023Review
- Usefulness of open data to determine the incidence of COVID-19 and its relationship with atmospheric variables in Spain during the 2020 lockdown.Technological forecasting and social change · 2023Article
- Country-level determinants of COVID-19 case rates and death rates: An ecological study.Transboundary and emerging diseases · 2022Article
- The Built Environment Assessment of Residential Areas in Wuhan during the Coronavirus Disease (COVID-19) Outbreak.International journal of environmental research and public health · 2022Article
- Machine Learning Models for Predicting the Occurrence of Respiratory Diseases Using Climatic and Air-Pollution Factors.Clinical and experimental otorhinolaryngology · 2022Article
- Geodemography, environment and societal characteristics drive the global diversity of emerging, zoonotic and human pathogens.Transboundary and emerging diseases · 2022Article
- Stochastic analysis of the relationship between atmospheric variables and coronavirus disease (COVID-19) in a hot, arid climate.Integrated environmental assessment and management · 2022Article
- Temperature dependent viral tropism: understanding viral seasonality and pathogenicity as applied to the avoidance and treatment of endemic viral respiratory illnesses.Reviews in medical virology · 2022Review
- Article
- Article
- Challenges in the control of COVID-19 outbreaks caused by the delta variant during periods of low humidity: an observational study in Sydney, Australia.Infectious diseases of poverty · 2021Observational
- Review
- SARS-CoV-2: lessons from both the history of medicine and from the biological behavior of other well-known viruses.Future microbiology · 2021Review
Corrections and comments
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Authors and funding
3 authors at 2 institutions in 2 countries.
Funding
Abstract
There is growing evidence that climatic factors could influence the evolution of the current COVID-19 pandemic. Here, we build on this evidence base, focusing on the southern hemisphere summer and autumn period. The relationship between climatic factors and COVID-19 cases in New South Wales, Australia was investigated during both the exponential and declining phases of the epidemic in 2020, and in different regions. Increased relative humidity was associated with decreased cases in both epidemic phases, and a consistent negative relationship was found between relative humidity and cases. Overall, a decrease in relative humidity of 1% was associated with an increase in cases of 7-8%. Overall, we found no relationship with between cases and temperature, rainfall or wind speed. Information generated in this study confirms humidity as a driver of SARS-CoV-2 transmission.
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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.