Italy Sees West Nile Virus Spread with Longer Mosquito Season

Italian health authorities have confirmed that rising temperatures and an extended warm season are enabling mosquitoes to carry West Nile virus over a broader geographic area and for longer periods each year. Recent surveillance data show a marked uptick in infected vectors in regions that previously reported only sporadic cases, indicating a shift in the virus’s seasonal footprint.

The findings suggest that the warmer climate is creating more favorable breeding conditions for the Culex species that transmit the virus, allowing them to remain active well into late autumn. Health officials warn that the extended transmission window could increase the risk of human infections, especially in communities that rely on outdoor activities during the warmer months.

Authorities are intensifying monitoring efforts and urging the public to take preventive measures, such as using insect repellent and eliminating standing water. Continued research will be essential to understand how climate change is reshaping West Nile virus dynamics and to guide future public‑health interventions.