Country surveillance profile
Mosquito-borne disease in Belarus — 2025–2026 data
As of 17 June 2026, Mosticare tracks Belarus surveillance for West Nile virus. No autochthonous human cases are reported year-to-date in 2026. Each figure cites the responsible national or EU authority.
Last updated · 17 June 2026 · CC BY 4.0
The data
| Country / region | Disease | Cases | Deaths | Period | Source | Updated |
|---|---|---|---|---|---|---|
| Belarus · Gomel and Brest regions (southern Belarus) most affected | West Nile virus | 16 | — | 1985-1994 study (published 2003) | Samoilova TI, Votiakov VI, Titov LP — Central European Journal of Public Health (2003) | 17 June 2026 |
About surveillance in Belarus
Belarus sits outside the EU/EEA West Nile surveillance run by the European Centre for Disease Prevention and Control (ECDC), so no recent annual national case count is published. The national authority is the Ministry of Health of the Republic of Belarus. West Nile virus circulation is nonetheless documented: a virologic and serologic study (Central European Journal of Public Health, 2003) isolated the virus from mosquitoes, birds and a patient and found human antibodies in 1.7% of the population. Culex pipiens is the relevant vector; invasive Aedes mosquitoes are not recorded as established.
Frequently asked questions
What mosquito-borne diseases is Belarus monitoring in 2026?
Mosticare tracks Belarus surveillance for West Nile virus, each sourced to the responsible national authority or ECDC.
How many West Nile virus cases does Belarus report each year?
There is no published recent annual figure. Belarus is not part of the ECDC EU/EEA West Nile surveillance system, so the weekly and seasonal European reports that count cases for countries such as Italy, Greece and Romania do not include Belarus. The most recent reliably-sourced national figure comes from a 1985-1994 study (published in the Central European Journal of Public Health in 2003), which identified 16 serologically confirmed cases of West Nile encephalitis among patients with fever of unclear cause.
Does West Nile virus actually circulate in Belarus?
Yes. The 2003 study documented active circulation: the virus was isolated from Aedes and Anopheles mosquitoes, from birds and from a febrile patient, and antibodies were found in 1.7% of the human population nationally (rising to 5.8% in the Gomel region and 15.4% in the Brest region in the south). The absence of cases in European Union surveillance reflects the fact that Belarus does not report into that system, not an absence of the virus.
Which mosquito carries West Nile virus in Belarus?
Culex pipiens, the common house mosquito, is the recognised primary West Nile bridge vector and is part of the Belarusian mosquito fauna (over 40 Culicidae species are recorded). The 2003 study named blood-sucking mosquitoes and birds as the principal participants in local circulation and isolated the virus specifically from Aedes and Anopheles mosquitoes.
Are tiger mosquitoes (Aedes albopictus) established in Belarus?
Not on the available evidence. The invasive Aedes albopictus and Aedes aegypti are not recorded as established or introduced in Belarus. ECDC's VectorNet invasive-mosquito distribution maps cover only EU/EEA countries and do not formally assess Belarus, so no official status exists; a 2018 review flagged invasive Aedes spread as a future risk for Eastern Europe rather than a current presence in Belarus.
Sources
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About this data
Mosticare aggregates and re-publishes vector-borne disease surveillance from ECDC, EFSA, and national ministries of health. Mosticare is an aggregator, not a primary surveillance authority — every figure on this page cites the originating source and is independently verifiable. This is a partial aggregation; for the complete EU/EEA totals, ECDC is the primary source.
The data behind this page is published as free, machine-readable feeds under CC BY 4.0 — the point-in-time incidence snapshot at /threat-map/feed.json (JSON Schema) and the multi-year trends at /threat-map/feed/trends.json (JSON Schema). See the live Europe threat map and the full data room.