West Nile infections spike in Italy as summer heat persists

Italy is experiencing a spike in West Nile virus infections at the end of August, according to The Local Italy, as the country's summer heat continues to create favorable conditions for the mosquitoes that transmit the disease. The increase has prompted health officials to issue guidance on how residents and visitors can protect themselves.

West Nile virus, which is primarily spread through the bite of infected Culex mosquitoes, has become a recurring seasonal concern across the Mediterranean basin. The virus can cause flu-like symptoms in some people, while in rare cases it can lead to severe neurological complications, particularly in older adults or those with weakened immune systems.

The current outbreak comes as much of Italy remains in the grip of a prolonged summer heatwave, conditions that experts say accelerate mosquito breeding cycles and viral transmission.

In Sardinia, the risks associated with West Nile virus are compounded by the island's particular environmental conditions. The region has endured several years of below-average rainfall, and the persistent drought has led to changes in water management and irrigation practices that can create new standing-water habitats for mosquito larvae, according to The Local's reporting on the national situation.

The Italian health authorities have not declared a state of emergency, but the uptick in cases has drawn attention to the importance of preventive measures. Residents and travelers are advised to use insect repellent, wear long-sleeved clothing during dawn and dusk, and eliminate standing water around homes, the report says.

The situation in Italy is part of a broader European pattern, with West Nile virus cases regularly reported across southern and central Europe during the late summer months. The European Centre for Disease Prevention and Control has previously highlighted the role of climate change in expanding the geographic range of the mosquitoes that carry the virus.

For Sardinia's large rural and pastoral population, the advice carries particular weight. Many residents work outdoors in the early morning and evening hours, when mosquito activity is highest, and the island's network of livestock watering points can serve as breeding grounds for the insects.

The Local notes that most people infected with West Nile virus show no symptoms at all, with roughly one in five developing a fever and other mild symptoms. The risk of severe disease remains low, but health officials are urging vigilance, especially for vulnerable groups.