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West Nile Virus Activity

201120122013201420152016201720182019202020212022
Birds015189719112200720
Mosquitoes000161620150000
Horses000000000000
Humans020100100000

 

2021 Alameda County WNV activity

2020 Alameda County WNV activity

2018 Alameda County WNV activity

2017 Alameda County WNV activity

2016 Alameda County WNV activity

2015 Alameda County WNV activity

2014 Alameda County WNV activity

California West Nile virus activity

National West Nile virus activity