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Warming World Fuels Mosquito Virus Spread
19 Sep
Summary
- Warmer seasons help mosquitoes spread West Nile virus more widely.
- Italy reports over 650 West Nile infections, half of Europe's total.
- Northern countries like the Netherlands see rising cases due to climate.
Italian health officials report that warmer temperatures and extended warm seasons are facilitating the spread of West Nile virus across a broader geographical area and for longer periods each year. This year, Italy has recorded more than 650 infections, representing approximately half of all cases in Europe.
According to researchers, climate change contributes to higher temperatures, which in turn help mosquitoes reproduce more effectively and prolong the transmission season. This phenomenon is leading to increased West Nile virus activity in regions previously unaffected, prompting attention from countries further north in Europe.
Nations like the Netherlands are experiencing a resurgence of West Nile cases, with several deaths reported this year, marking the first since 2020. Experts emphasize that a warming climate provides more favorable conditions for both the virus and its mosquito vectors to survive and replicate over extended periods.
Furthermore, experts point to broader environmental factors such as declining bird diversity and changes in land use, in addition to a warming climate, contributing to increased mosquito activity. The European Center for Disease Prevention and Control has also warned about favorable conditions for invasive mosquito species due to Europe's warming trend, with an increase in affected regions noted over the past decade.
