Country surveillance profile
Mosquito-borne disease in Bulgaria — 2025–2026 data
As of 14 June 2026, Mosticare tracks Bulgaria 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 · 14 June 2026 · CC BY 4.0
The data
| Country / region | Disease | Cases | Deaths | Period | Source | Updated |
|---|---|---|---|---|---|---|
| Bulgaria | West Nile virus | 1 | — | 2025 transmission season | ECDC · Surveillance of West Nile virus infections in Europe (monthly report, data to 3 December 2025) | 14 June 2026 |
About surveillance in Bulgaria
West Nile virus is the main mosquito-borne disease monitored in Bulgaria, where national surveillance is run by the National Centre for Infectious and Parasitic Diseases (NCIPD) in Sofia. For the 2025 season, ECDC recorded 1 locally acquired human WNV case in Bulgaria. ECDC reported 63 WNV deaths across Europe in aggregate but attributed no death specifically to Bulgaria.
Frequently asked questions
What mosquito-borne diseases is Bulgaria monitoring in 2026?
Mosticare tracks Bulgaria surveillance for West Nile virus, each sourced to the responsible national authority or ECDC.
How many West Nile virus cases did Bulgaria report in 2025?
Bulgaria reported 1 West Nile virus case in 2025 (2025 transmission season), per ECDC · Surveillance of West Nile virus infections in Europe (monthly report, data to 3 December 2025).
How many West Nile virus cases did Bulgaria report in 2025?
ECDC recorded 1 locally acquired (autochthonous) human West Nile virus case in Bulgaria during the 2025 season. ECDC reported 63 WNV deaths across Europe in aggregate as of 3 October 2025, but did not attribute any death specifically to Bulgaria, so a Bulgaria death figure is not published.
Which mosquito spreads West Nile virus in Bulgaria, and is the tiger mosquito present?
West Nile virus in Europe is transmitted mainly by Culex mosquitoes (notably Culex pipiens). Separately, ECDC's VectorNet maps list the Asian tiger mosquito (Aedes albopictus) as established in Bulgaria as of June 2025; Aedes aegypti is not recorded as established there.
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.