Overview

• Europe has logged 27 chikungunya outbreaks this year, the highest number on record, according to the ECDC.
• By mid‑August, eight countries reported 335 locally transmitted West Nile virus cases and 19 deaths, with Italy most affected at 247 cases.
• Aedes albopictus, the tiger mosquito that spreads chikungunya, is now established in 16 countries and 369 regions, up from 114 a decade ago.
• Authorities confirmed the first locally acquired chikungunya case in France’s Alsace in July, signaling a shift of transmission to higher latitudes.
• The ECDC expects infections to climb toward an August–September peak and urges use of repellents, covering clothing, and window or bed nets, especially for vulnerable people.