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the claim

Coronavirus transmission is affected by seasonal climate variations

the verdict
SUPPORTED
the evidence backs this
Recorded sources
8 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that coronavirus transmission is affected by seasonal climate variations?

Yes. Multiple studies demonstrate that coronavirus transmission and persistence are significantly modulated by seasonal climate variations, exhibiting distinct temperature and humidity dependencies as well as recurrent regional peaks.

Verdict: SUPPORTED · 8 sources for, 0 against · Last checked

The analysis

The retrieved papers consistently report associations between seasonal climatic variables (such as temperature, humidity, and weather patterns) and coronavirus transmission, survival, or epidemiological peaks across various geographic regions. None of the provided papers refute the influence of climate variations, leading to a supported balance verdict.

Evidence for · 8
Projecting the transmission dynamics of SARS-CoV-2 through the postpandemic period
2020
Kissler et al. project recurrent wintertime peaks of SARS-CoV-2 based on estimates of seasonality.
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Kissler, S., Tedijanto, C., Goldstein, E., Grad, Y., & Lipsitch, M. (2020). Projecting the transmission dynamics of SARS-CoV-2 through the postpandemic period. doi.org. https://doi.org/10.1126/science.abb5793

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More for · 7
Effects of Air Temperature and Relative Humidity on Coronavirus Survival on Surfaces
2010
Bannister et al. demonstrate that air temperature and relative humidity significantly affect coronavirus survival on surfaces.
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Casanova, L. M., Jeon, S., Rutala, W. A., Weber, D. J., & Sobsey, M. D. (2010). Effects of Air Temperature and Relative Humidity on Coronavirus Survival on Surfaces. doi.org. https://doi.org/10.1128/aem.02291-09

Integrating wastewater surveillance and meteorological data to monitor seasonal variability of enteric and respiratory pathogens for infectious disease control in Dhaka city.
2025
Uddin et al. find that meteorological factors such as temperature significantly influence SARS-CoV-2 abundance in wastewater.
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Jahan, F., Nasim, M. I., Wang, Y., Bashar, S. M. K., Hasan, R., Suchana, A. J., Amin, N., Haque, R., Hares, M. A., Saha, A., Hossain, M. E., Rahman, M. Z., Diamond, M. B., Raj, S., Hilton, S., Liu, P., Moe, C., & Rahman, M. (2025). Integrating wastewater surveillance and meteorological data to monitor seasonal variability of enteric and respiratory pathogens for infectious disease control in Dhaka city.. doi.org. https://doi.org/10.1016/j.ijheh.2025.114591

On the Transmission Dynamics of SARS-CoV-2 in a Temperate Climate
2021
Karakatsanis et al. note that intra-annual climatic variations and transmission rates show distinct seasonal patterns.
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Kioutsioukis, I. & Stilianakis, N. I. (2021). On the Transmission Dynamics of SARS-CoV-2 in a Temperate Climate. doi.org. https://doi.org/10.3390/ijerph18041660

Climatic Influence on COVID-19: Investigating the Role of Temperature and Humidity in the Spread of the Omicron Variant.
2026
Cazorla et al. find consistent negative correlations between SARS-CoV-2 Omicron incidence and temperature and absolute humidity in mid-latitudes.
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L, L., A, F., B, A., & X, R. (2026). Climatic Influence on COVID-19: Investigating the Role of Temperature and Humidity in the Spread of the Omicron Variant.. doi.org. https://doi.org/10.1029/2025gh001750

Rethinking COVID-19 seasonality: A summer respiratory virus in the tropics, contrast to influenza.
2026
Chaudhuri et al. analyze multi-year surveillance data showing seasonal divergence with summer surges in the tropics and winter peaks in temperate climates.
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PK, P. & R, G. (2026). Rethinking COVID-19 seasonality: A summer respiratory virus in the tropics, contrast to influenza.. doi.org. https://doi.org/10.5501/wjv.v15.i1.116492

Spectrum of Respiratory Viral Illness in the Northwestern Region of Saudi Arabia: A Molecular Multiplex PCR-Based Study in a Tertiary Care Setting.
2026
Alharbi et al. observe clear winter peaks for SARS-CoV-2 alongside other respiratory viruses in Saudi Arabia.
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UI, M., MA, A., RA, S., SA, H., & O, M. (2026). Spectrum of Respiratory Viral Illness in the Northwestern Region of Saudi Arabia: A Molecular Multiplex PCR-Based Study in a Tertiary Care Setting.. doi.org. https://doi.org/10.7759/cureus.107372

The epidemiology of SARS-CoV-2, Influenza, and Respiratory Syncytial Virus circulation among adult patients with acute respiratory illness in Kampala Metropolitan Area in Uganda.
2026
Kajumbula et al. document seasonal bimodal peaks for SARS-CoV-2 circulation in Uganda.
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J, A., B, B., L, M., N, K., P, A., AN, K., K, N., M, S., E, A., W, M., M, J., M, O., E, W., J, K. L., J, N., J, L., J, O., D, O., P, B., & B, K. (2026). The epidemiology of SARS-CoV-2, Influenza, and Respiratory Syncytial Virus circulation among adult patients with acute respiratory illness in Kampala Metropolitan Area in Uganda.. doi.org. https://doi.org/10.1371/journal.pone.0344869

What does the evidence say?

The retrieved papers consistently report associations between seasonal climatic variables (such as temperature, humidity, and weather patterns) and coronavirus transmission, survival, or epidemiological peaks across various geographic regions. None of the provided papers refute the influence of climate variations, leading to a supported balance verdict.

Receipt History
first checked04 Aug 2026
judged → SUPPORTED · 9604 Aug 2026
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