West Nile Virus Activity

2025 West Nile Virus Activity

Silhouettes: 0 humans, 1 dead bird, 0 mosquito samples.

2024 No West Nile Virus Activity Detected

2023 West Nile Virus Activity 2022 West Nile Virus Activity 2021 West Nile Virus Activity 2020 West Nile Virus Activity

2019 No West Nile Virus Activity Detected

2018 West Nile Virus Activity 2017 West Nile Virus Activity 2016 West Nile Virus Activity 2015 West Nile Virus Activity

Report a Dead Bird

If you find a dead bird, particularly a crow, jay, magpie, raven, sparrow, finch, or raptor, please file an online report at westnile.ca.gov or call toll-free 1-877-968-2473 (1-877-WNV-BIRD). Dead…