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the claim

The frequency of epidemics caused by Dengue viruses 1–4, Zika virus, and Chikungunya viruses has increased in recent years due to urbanization, human mobility, and the spread of Aedes aegypti and Aedes albopictus mosquitoes.

the verdict
SUPPORTED
the evidence backs this
Recorded sources
6 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 the frequency of epidemics caused by Dengue viruses 1–4, Zika virus, and Chikungunya viruses has increased in recent years due to urbanization, human mobility, and the spread of Aedes aegypti and Aedes albopictus mosquitoes?

Yes. The rising frequency and geographic expansion of dengue, Zika, and chikungunya epidemics are widely documented to be driven by urbanization, human mobility, and the proliferation of Aedes mosquito vectors.

Verdict: SUPPORTED · 6 sources for, 0 against · Last checked

The analysis

The retrieved literature consistently supports the claim that the increased frequency and expansion of epidemics caused by dengue, Zika, and chikungunya viruses are driven by factors such as urbanization, human mobility, and the spread of Aedes mosquitoes (specifically Aedes aegypti and Aedes albopictus). Multiple papers provide empirical and review-level evidence confirming these exact causal links, with zero papers providing refutations.

Evidence for · 6
Spatial diffusion of the 2015–2016 Zika, dengue and chikungunya epidemics in Rio de Janeiro Municipality, Brazil
2019
Highlights the triple epidemic of dengue, Zika, and chikungunya transmitted by Aedes aegypti during urban outbreaks in Brazil.
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Dalvi, A. P. R. & Braga, J. U. (2019). Spatial diffusion of the 2015–2016 Zika, dengue and chikungunya epidemics in Rio de Janeiro Municipality, Brazil. doi.org. https://doi.org/10.1017/s0950268819001250

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More for · 5
Review of selected mosquito-borne diseases: arboviruses (dengue, chikungunya, Zika, West Nile, Japanese encephalitis, yellow fever) and parasitic diseases (malaria, lymphatic Filariasis).
2025
Notes that mosquito-borne diseases like dengue, Zika, and chikungunya are expanding due to climate change and urbanization.
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YL, W., Z, W., RL, L., & F, T. (2025). Review of selected mosquito-borne diseases: arboviruses (dengue, chikungunya, Zika, West Nile, Japanese encephalitis, yellow fever) and parasitic diseases (malaria, lymphatic Filariasis).. doi.org. https://doi.org/10.3389/fpubh.2025.1712094

Triple Burden in the Democratic Republic of Congo: Climate Change, Armed Conflict, and the Silent Spread of Arboviruses. A Narrative Review.
2026
Identifies environmental changes, population displacement, and urban breeding sites as key drivers of arbovirus spread.
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S, D., H, Y., D, M., J, E., Z, S., JAD, K., JS, K., YV, W., & C, T. (2026). Triple Burden in the Democratic Republic of Congo: Climate Change, Armed Conflict, and the Silent Spread of Arboviruses. A Narrative Review.. doi.org. https://doi.org/10.1002/hsr2.72188

Meeting Report on an Integrated Research Agenda for Mosquito-Borne Arboviruses.
2025
Connects the emerging global threat of mosquito-borne arboviruses to the convergence of ecologic, economic, and social factors including land use and urbanization.
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AK, U., NM, M., A, M., N, I., JE, S., AJ, M., JT, O., T, L., A, C., PC, F., JP, G., E, M., L, A., DP, R. A., LL, C., NR, F., R, M., K, M., KA, M., H, S., R, S., PFC, V., YS, L., SP, S., JN, d. V., SK, D., E, H., TH, D. S., R, V., J, W., MT, O., & EM, L. (2025). Meeting Report on an Integrated Research Agenda for Mosquito-Borne Arboviruses.. doi.org. https://doi.org/10.1093/ofid/ofaf395

Arbovirus co-circulation and epidemiological convergence in a changing climate: challenges for surveillance, diagnosis and public health preparedness.
2026
States that arboviral diseases are undergoing substantial epidemiological changes driven by climate change, urbanization, global mobility, and vector expansion.
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GM, L., A, I., C, R., FGDC, L., ME, K., MM, A., S, A., A, M., & M, G. (2026). Arbovirus co-circulation and epidemiological convergence in a changing climate: challenges for surveillance, diagnosis and public health preparedness.. doi.org. https://doi.org/10.1007/s42770-026-02083-8

The Second Silent Pandemic: Why Arboviruses Demand an Orchestrated Global Health Response.
2026
Explains that the geographical spread and intensity of arboviral outbreaks have reached unprecedented levels due to climate change, transcontinental travel, and urbanization.
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NK, Q. & AW, T. (2026). The Second Silent Pandemic: Why Arboviruses Demand an Orchestrated Global Health Response.. doi.org. https://doi.org/10.3390/pathogens15040398

What does the evidence say?

The retrieved literature consistently supports the claim that the increased frequency and expansion of epidemics caused by dengue, Zika, and chikungunya viruses are driven by factors such as urbanization, human mobility, and the spread of Aedes mosquitoes (specifically Aedes aegypti and Aedes albopictus). Multiple papers provide empirical and review-level evidence confirming these exact causal links, with zero papers providing refutations.

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