Urban pests surge in Spanish cities, raising public‑health risks

Intensified urbanisation, rising temperatures and inadequate waste management are driving a rapid increase in rodents and insects across Spanish cities. The World Health Organization estimates that vector‑borne diseases account for more than 17 % of all infectious illnesses worldwide, affecting millions each year. In Spain, rats and mice thrive near unmanaged refuse, transmitting leptospirosis and salmonellosis, while cockroaches spread bacteria in kitchens and sewers. The invasive Asian tiger mosquito, now widespread in Europe, is linked to dengue and West Nile virus outbreaks.

Experts warn that climate change prolongs breeding seasons and expands the geographic range of these species, while global trade accelerates the introduction of new invasive pests. Health authorities stress the need for improved sanitation, robust pest‑control programs and public awareness to curb the growing health threat.