The engines
Trade, concrete and
climate open the door.
Trade & travel carry it
Every big jump on the map followed a shipping route: slave ships, steamships, the Suez Canal. Today its drought-proof eggs ride in used tires and potted plants, and adults turn up in aircraft cabins. Port and airport surveillance is why recent arrivals in the Netherlands and the Canary Islands were stamped out before they could settle.
Urbanization builds the habitat
It breeds in exactly what fast-growing, under-served cities produce: tires, blocked drains, flowerpot saucers, roof gutters, and open water tanks where piped water is unreliable. make breeding sites and gather the human hosts it prefers in the same place.
Climate extends the season
Warmth speeds up everything. Larvae develop faster, females bite more often, and the virus inside them matures sooner. Warmer nights and longer summers push suitable conditions to higher latitudes and elevations. Droughts push people to store water, and floods leave containers brimming.
Modelling suggests that by 2050 Aedes mosquitoes could reach places where about half the world's population lives.
“I don't fly far, only a few hundred metres in my whole life. You do the long-distance travel for me.”
Ada · Aedes aegypti
