title: "Tiger Mosquitoes in Belgium 2026: A New Reality | Mosticare" date: "2026-04-03" excerpt: "Tiger mosquitoes are now established in 8 Belgian municipalities with confirmed overwintering. From Schelle to Wilrijk, Belgium faces a growing mosquito challenge with no national strategy." category: "markets" author: "Mosticare Editorial"

Tiger Mosquitoes in Belgium: A New Reality

Belgium has crossed a threshold. The Asian tiger mosquito (Aedes albopictus) is no longer a visitor to the country -- it is a resident. By 2025, tiger mosquitoes have been confirmed as establishing in eight Belgian municipalities, with overwintering demonstrated at multiple sites. Areas like Schelle and Boom in Antwerp province are heavily infested, and the species continues to expand into new territory each year.

For a country that had no tiger mosquitoes a decade ago, the speed of this transformation is striking -- and the absence of a comprehensive national strategy leaves Belgium playing catch-up.

From First Detection to Establishment

Belgium's tiger mosquito timeline has been rapid:

2000: First detections at import locations (tire yards, Lucky Bamboo greenhouses) -- transient introductions without local breeding.
2018-2020: First confirmed outdoor breeding and community-level detections.
2023: Overwintering confirmed in Wilrijk (Antwerp) and Lebbeke (East Flanders), indicating permanent establishment.
2024: Overwintering confirmed in Ath (Hainaut), Kessel-Lo (Flemish Brabant), and Puurs-Sint-Amands (Antwerp), bringing the total to five established locations. Tiger mosquitoes were reported in six Flanders municipalities for the first time, including Boom and Schelle.
2025: Three new establishment confirmations -- Sint-Joost-ten-Node (Brussels), Wijnegem (Antwerp), and Hoegaarden (Flemish Brabant) -- bringing the total to eight municipalities with confirmed established populations.

The pattern is clear: the number of municipalities with established (overwintering) tiger mosquito populations is roughly doubling each year.

Schelle, Boom, and the Antwerp Hotspot

The Antwerp province has emerged as Belgium's tiger mosquito epicentre. The municipalities of Schelle and Boom are described as heavily infested, with resident populations large enough to cause significant nuisance during the summer months.

Nearby Wilrijk (an Antwerp district) was one of the first locations where overwintering was confirmed, and Wijnegem and Puurs-Sint-Amands round out the Antwerp cluster. The concentration in this area is likely driven by:

Transport corridors: The Antwerp port complex is one of Europe's largest, with massive volumes of goods arriving from Southern Europe and beyond. Vehicles and cargo serve as primary vectors for mosquito introduction.
Urban-suburban landscape: The mix of residential gardens, allotments, and green spaces provides ideal breeding habitat.
Microclimate: Urban heat island effects make the Antwerp area marginally warmer than surrounding countryside, improving overwintering prospects.

Flanders has responded by stepping up measures to limit tiger mosquito spread, including door-to-door inspections in affected municipalities, larvicide treatments of public spaces, and resident awareness campaigns.

Belgium's Increasing Climate Suitability

A 2025 study published in Parasites & Vectors assessed Belgium's increasing suitability for Aedes albopictus, concluding that climate change is progressively making more of the country habitable for the species. Key findings include:

Winter temperatures are the primary limiting factor for tiger mosquito establishment in Belgium. As winters become milder, more areas will support overwintering.
Urban areas are the first to become suitable, due to heat island effects.
By the 2030s, most of Flanders and the Brussels Capital Region are projected to support established tiger mosquito populations.
Wallonia's suitability is increasing but lags behind Flanders due to higher elevations in parts of the region.

The study underscores that Belgium's tiger mosquito problem will only grow in the coming years, making early intervention increasingly important.

The Institute of Tropical Medicine: Leading Surveillance

The Institute of Tropical Medicine (ITM) in Antwerp serves as Belgium's primary centre of expertise for invasive mosquito surveillance. ITM coordinates:

Ovitrap monitoring networks: Traps deployed in known and suspected tiger mosquito areas to detect egg-laying activity.
Citizen reporting: Public awareness campaigns encouraging citizens to report tiger mosquito sightings. The ITM validates reports and maps confirmed locations.
Rapid response: When new introductions or establishment is confirmed, ITM works with local authorities to implement containment measures.

ITM's surveillance work is complemented by an active public communication effort, with regular press releases updating the public on the tiger mosquito's status and advising on prevention measures.

Despite ITM's efforts, surveillance capacity is limited by funding. Belgium currently lacks a dedicated national vector control programme, and the response relies heavily on the voluntary efforts of research institutions and the ad hoc involvement of municipal authorities.

No National Strategy: A Critical Gap

Perhaps the most concerning aspect of Belgium's tiger mosquito situation is the absence of a comprehensive national mosquito control strategy. Unlike France (which has a structured anti-dissemination plan), Italy (with decades of integrated surveillance), or even Germany (with the Mueckenatlas citizen science programme), Belgium has no formal national framework for:

Coordinating surveillance across regions (Flanders, Wallonia, and Brussels operate largely independently).
Mandating municipal action in areas with established populations.
Funding sustained vector control beyond reactive measures following confirmed introductions.
Preparing for disease transmission: Belgium has not yet recorded locally acquired dengue or chikungunya, but the conditions for transmission are approaching.

The VRT reported that experts have issued direct warnings about the need for proactive measures, noting that once tiger mosquitoes are established, eradication becomes effectively impossible.

The Market Opportunity

Belgium's evolving mosquito situation represents a significant and largely unaddressed market opportunity:

1.5 million+ gardens and terraces in the residential sector, many in areas where tiger mosquitoes are establishing.
Growing public awareness driven by media coverage and direct nuisance experience in affected municipalities.
No dominant mosquito protection brand has emerged in the Belgian market. Unlike Southern European countries where mosquito products are a household staple, Belgium's consumer market for mosquito protection is nascent.
Hospitality sector: Hotels, B&Bs, and holiday rentals in affected areas are beginning to face guest complaints about mosquitoes -- a new phenomenon for the Belgian market.
Health-conscious consumers: Belgium's educated, health-conscious population is receptive to preventive health products, particularly when backed by scientific evidence.

The timing is significant. Entering the Belgian market now, as the problem transitions from niche to mainstream, positions early movers to build brand awareness before mass-market demand materialises.

What Belgian Residents Should Do

Prevention

Eliminate standing water in gardens, terraces, and balconies. Check rain barrels (cover them with fine mesh), plant saucers, children's toys, and gutters.
The tiger mosquito breeds in remarkably small water volumes -- a bottle cap of water is sufficient.
Do not transport mosquitoes inadvertently: check your car before returning from holidays in Southern Europe.

Protection

Use DEET or icaridin-based repellents during outdoor activities in affected areas.
Install mosquito screens on bedroom windows, particularly in the Antwerp area and other established zones.
Be aware that tiger mosquitoes bite during the day, unlike native Belgian mosquito species.

Report

If you spot a black-and-white striped mosquito biting during the day, report it to the ITM or through the Mosquito Alert app. Citizen reports are essential for tracking the species' expansion.