West Nile cases spike in Italy as Adriatic regions watch mosquito season

Italy is seeing a sharp increase in West Nile virus infections at the end of August, according to The Local Italy, as the mosquito-borne disease spreads more widely across the country. The report notes that cases have spiked in recent weeks, with health authorities urging residents and visitors to take precautions against mosquito bites.

The outbreak has drawn attention to the Adriatic regions, where the humid coastal climate and standing water in agricultural areas create conditions favourable to the Culex mosquitoes that carry the virus. The Local's report outlines the symptoms to watch for, which range from mild flu-like illness to, in rare cases, severe neurological complications.

The current spike follows a pattern seen in previous Italian summers, when West Nile cases typically peak in late August and early September. The Local Italy reports that the virus has been detected in several regions, with the highest concentration of human cases reported in the north-east, particularly around the Po Valley. Health officials have noted that most infected people show no symptoms, but the virus can be serious for the elderly and those with weakened immune systems.

For the Marche region, the Adriatic coastline and the network of rivers and irrigation channels that cross the agricultural interior provide ample breeding grounds for mosquitoes. The region's fishing communities, many of whom work outdoors at dawn and dusk when mosquitoes are most active, are among those most exposed. Local health authorities have historically advised residents to use repellent, wear long sleeves in the evening, and eliminate standing water around homes.

The Local Italy's guidance emphasises that there is no specific treatment or vaccine for West Nile virus, making prevention the primary defence. The report also notes that the virus is transmitted exclusively through mosquito bites and cannot be passed from person to person. Blood donation services in affected areas have previously tightened screening during outbreak periods, a measure that may again be relevant as cases continue to climb.

The spike comes as much of Italy remains focused on summer travel and tourism, raising concerns about visitors unknowingly exposed to the virus. For the Marche coast, where beach tourism drives much of the summer economy, the health alert adds a new consideration for the final weeks of the season.