ViVa 30– Outbreak News (29th July 2026)

Europe West Nile virus in Europe: ECDC’s seasonal surveillance shows West Nile transmission is underway, with 81 locally acquired human cases across six countries and 35 affected areas reported as of 22 July 2026; Italy and Greece account for most cases, and new affected areas continue to appear. Control relies on mosquito surveillance, vector control, and targeted public-health messaging, and the seasonal pattern suggests further cases are likely while transmission conditions remain favorable. ECDC threat bulletin: ECDC’s latest communicable disease threats report for 18–24 July 2026 includes updates on Ebola and West Nile virus, indicating these remain under active European surveillance even when no large EU transmission is occurring. The report itself is a live signal that multiple threats are still being monitored week by week. Asia Chikungunya in China: Publicly indexed reporting continues to describe an active chikungunya outbreak in Guangdong/Foshan, with thousands of cases reported in 2025 and continued travel-related...