Where have all the mosquitoes gone? Parts of the US are seeing a huge drop - and that has experts worried
Key Points:
- Mosquito populations in Western and Midwest U.S. states have dropped by 50-70% this year, largely due to a historic drought driven by climate change.
- Despite fewer mosquitoes, cases of mosquito-borne diseases like West Nile virus are rising, with 143 cases and 5 deaths reported so far this year, particularly in Arizona, Colorado, and Utah.
- Drought conditions concentrate mosquitoes and birds around shrinking water sources, increasing the transmission risk of West Nile virus despite lower overall mosquito numbers.
- Mosquito populations remain vast and resilient, with over 200 species in the U.S., some thriving even in drought conditions, and climate change is extending the mosquito breeding season by about 18 days annually compared to 50 years ago.
- Scientists are exploring biohacking and community control measures to manage mosquito populations, but experts acknowledge that mosquitoes are unlikely to be completely eradicated.