WEST NILE VIRUS ACTIVITY

WEST NILE VIRUS ACTIVITY

The Sacramento-Yolo Mosquito and Vector Control District’s ongoing surveillance program has detected West Nile virus activity in Sacramento or Yolo counties to date this year.

For Human and Equine cases, please visit westnile.ca.gov.

West Nile virus positives total for 2021
Sacramento County Yolo County Total
Sentinel Animals 0 0 0
Mosquito Samples 119 49 168
Dead Birds 97 9 106
Positive Birds for 2021
Date Number County Zip Species
05/17/21 #21-528 Sacramento 95632 California Scrub-Jay
05/17/21 #21-529 Sacramento 95632 California Scrub-Jay
05/17/21 #21-530 Sacramento 95632 California Scrub-Jay
06/01/21 #21-659 Sacramento 95662 California Scrub-Jay
06/07/21 #21-761 Sacramento 95610 Yellow-billed Magpie
06/08/21 #21-766 Sacramento 95632 California Scrub-Jay
06/08/21 #21-767 Sacramento 95632 California Scrub-Jay
06/09/21 #21-781 Sacramento 95632 American Crow
06/09/21 #21-783 Sacramento 95632 California Scrub-Jay
06/09/21 #21-784 Sacramento 95632 California Scrub-Jay
06/09/21 #21-787 Sacramento 95610 California Scrub-Jay
06/10/21 #21-798 Sacramento 95632 California Scrub-Jay
06/10/21 #21-799 Sacramento 95828 American Crow
06/10/21 #21-800 Sacramento 95828 American Crow
06/10/21 #21-802 Sacramento 95608 California Scrub-Jay
06/14/21 #21-839 Sacramento 95673 American Crow
06/17/21 #21-894 Sacramento 95608 California Scrub-Jay
06/21/21 #21-916 Sacramento 95828 American Crow
06/24/21 #21-960 Sacramento 95826 California Scrub-Jay
06/25/21 #21-961 Sacramento 95626 American Crow
06/29/21 #21-992 Sacramento 95610 American Crow
06/29/21 #21-993 Sacramento 95610 American Crow
06/29/21 #21-998 Sacramento 95830 California Scrub-Jay
06/30/21 #21-1010 Sacramento 95632 American Crow
07/02/21 #21-1028 Sacramento 95632 California Scrub-Jay
07/02/21 #21-1063 Sacramento 95608 Yellow-billed Magpie
07/02/21 #21-1069 Sacramento 95828 American Crow
07/02/21 #21-1071 Sacramento 95608 California Scrub-Jay
07/06/21 #21-1088 Sacramento 95838 Yellow-billed Magpie
07/08/21 #21-1099 Sacramento 95632 House Sparrow
07/08/21 #21-1100 Sacramento 95632 House Finch
07/08/21 #21-1102 Sacramento 95628 American Crow
07/09/21 #21-1114 Sacramento 95821 Yellow-billed Magpie
07/09/21 #21-1115 Sacramento 95828 California Scrub-Jay
07/09/21 #21-1120 Sacramento 95632 American Crow
07/09/21 #21-1123 Sacramento 95828 American Crow
07/10/21 #21-1125 Sacramento 95821 California Scrub-Jay
07/12/21 #21-1136 Sacramento 95608 California Scrub-Jay
07/13/21 #21-1159 Sacramento 95821 Mourning Dove
07/13/21 #21-1164 Sacramento 95821 American Crow
07/14/21 #21-1178 Sacramento 95624 House Finch
07/15/21 #21-1183 Sacramento 95693 American Robin
07/15/21 #21-1185 Sacramento 95662 California Scrub-Jay
07/15/21 #21-1214 Sacramento 95608 Northern Mockingbird
07/19/21 #21-1225 Sacramento 95608 American Crow
07/19/21 #21-1227 Sacramento 95838 California Scrub-Jay
07/19/21 #21-1228 Sacramento 95838 Yellow-billed Magpie
07/19/21 #21-1232 Sacramento 95827 American Crow
07/19/21 #21-1234 Sacramento 95831 Black Phoebe
07/19/21 #21-1235 Sacramento 95670 American Crow
07/20/21 #21-1247 Sacramento 95758 Western Bluebird
07/21/21 #21-1258 Sacramento 95818 American Crow
07/22/21 #21-1271 Sacramento 95838 American Crow
07/24/21 #21-1295 Sacramento 95821 Northern Mockingbird
07/26/21 #21-1287 Sacramento 95621 American Crow
07/26/21 #21-1296 Sacramento 95662 California Scrub-Jay
07/27/21 #21-1313 Sacramento 95608 Yellow-billed Magpie
07/28/21 #21-1314 Sacramento 95825 American Crow
07/29/21 #21-1331 Sacramento 95825 American Crow
07/29/21 #21-1336 Sacramento 95673 California Scrub-Jay
07/30/21 #21-1357 Sacramento 95843 American Crow
07/30/21 #21-1358 Sacramento 95843 American Crow
07/30/21 #21-1362 Sacramento 95608 American Crow
07/30/21 #21-1367 Sacramento 95693 California Scrub-Jay
08/01/21 #21-1368 Sacramento 95820 California Scrub-Jay
08/02/21 #21-1372 Sacramento 95608 California Scrub-Jay
08/04/21 #21-1387 Sacramento 95608 American Crow
08/04/21 #21-1390 Sacramento 95630 American Crow
08/06/21 #21-1399 Sacramento 95758 Western Bluebird
08/06/21 #21-1410 Sacramento 95823 House Finch
08/09/21 #21-1423 Sacramento 95608 American Crow
08/09/21 #21-1425 Yolo 95616 Lesser Goldfinch
08/11/21 #21-1440 Yolo 95694 American Crow
08/12/21 #21-1452 Sacramento 95835 American Crow
08/14/21 #21-1488 Sacramento 95628 Mourning Dove
08/17/21 #21-1490 Sacramento 95821 House Finch
08/17/21 #21-1492 Sacramento 95608 Mourning Dove
08/18/21 #21-1501 Sacramento 95608 Western Bluebird
08/19/21 #21-1507 Sacramento 95821 Mourning Dove
08/19/21 #21-1508 Sacramento 95821 Mourning Dove
08/20/21 #21-1518 Sacramento 95864 House Finch
08/20/21 #21-1519 Sacramento 95821 Yellow-billed Magpie
08/20/21 #21-1520 Sacramento 95821 Yellow-billed Magpie
08/21/21 #21-1534 Sacramento 95758 House Finch
08/21/21 #21-1524 Sacramento 95757 California Scrub-Jay
08/22/21 #21-1525 Yolo 95616 American Crow
08/22/21 #21-1530 Sacramento 95826 California Scrub-Jay
08/23/21 #21-1537 Sacramento 95841 Mourning Dove
08/29/21 #21-1602 Sacramento 95608 Yellow-billed Magpie
08/31/21 #21-1620 Sacramento 95811 American Crow
09/01/21 #21-1630 Sacramento 95608 Western Bluebird
09/02/21 #21-1637 Yolo 95616 American Crow
09/02/21 #21-1640 Sacramento 95831 American Crow
09/02/21 #21-1641 Sacramento 95831 American Crow
09/03/21 #21-1642 Sacramento 95670 Mourning Dove
09/03/21 #21-1653 Sacramento 95864 California Scrub-Jay
09/06/21 #21-1650 Yolo 95618 Unknown - songbird
09/07/21 #21-1658 Sacramento 95608 Yellow-billed Magpie
09/09/21 #21-1669 Yolo 95618 American Crow
09/10/21 #21-1674 Sacramento 95821 Yellow-billed Magpie
09/14/21 #21-1698 Yolo 95618 Unknown - Crow or Raven
09/14/21 #21-1699 Yolo 95618 Orange-Crowned Warbler
09/14/21 #21-1701 Sacramento 95831 American Crow
09/14/21 #21-1703 Yolo 95616 Barn Owl
09/18/21 #21-1730 Sacramento 95818 American Crow
09/24/21 #21-1771 Sacramento 95821 House Finch
Positive Mosquito Samples for 2021
Date County Zip Species
05/28/21 Sacramento 95632 7 Culex tarsalis
05/28/21 Sacramento 95632 7 Culex pipiens
06/04/21 Sacramento 95832 1 Culex pipiens
06/04/21 Sacramento 95632 4 Culex pipiens
06/04/21 Sacramento 95632 18 Culex pipiens
06/04/21 Sacramento 95632 10 Culex pipiens
06/08/21 Yolo 95645 2 Culex tarsalis
06/11/21 Sacramento 95864 1 Culex tarsalis
06/15/21 Sacramento 95662 1 Culex pipiens
06/18/21 Sacramento 95632 4 Culex pipiens
06/18/21 Sacramento 95632 3 Culex tarsalis
06/18/21 Sacramento 95632 21 Culex pipiens
06/29/21 Sacramento 95842 9 Culex pipiens
06/29/21 Sacramento 95842 7 Culex tarsalis
06/29/21 Sacramento 95828 24 Culex pipiens
07/02/21 Sacramento 95820 3 Culex tarsalis
07/07/21 Sacramento 95828 17 Culex tarsalis
07/07/21 Sacramento 95621 2 Culex pipiens
07/09/21 Sacramento 95632 41 Culex pipiens
07/09/21 Sacramento 95621 14 Culex pipiens
07/13/21 Sacramento 95828 1 Culex tarsalis
07/16/21 Yolo 95776 50 Culex tarsalis
07/16/21 Yolo 95695 1 Culex pipiens
07/16/21 Sacramento 95638 6 Culex tarsalis
07/16/21 Sacramento 95632 46 Culex tarsalis
07/16/21 Sacramento 95628 5 Culex pipiens
07/16/21 Sacramento 95621 6 Culex tarsalis
07/20/21 Sacramento 95842 1 Culex tarsalis
07/23/21 Sacramento 95758 3 Culex pipiens
07/27/21 Yolo 95695 50 Culex tarsalis
07/29/21 Sacramento 95608 29 Culex pipiens
07/30/21 Sacramento 95757 37 Culex pipiens
07/30/21 Sacramento 95628 6 Culex tarsalis
08/03/21 Yolo 95937 50 Culex tarsalis
08/03/21 Yolo 95695 50 Culex tarsalis
08/03/21 Yolo 95695 50 Culex tarsalis
08/03/21 Sacramento 95842 24 Culex tarsalis
08/03/21 Sacramento 95838 41 Culex tarsalis
08/03/21 Sacramento 95758 11 Culex pipiens
08/03/21 Sacramento 95624 7 Culex pipiens
08/06/21 Sacramento 95843 18 Culex pipiens
08/06/21 Sacramento 95757 50 Culex tarsalis
08/06/21 Sacramento 95693 39 Culex tarsalis
08/06/21 Sacramento 95632 50 Culex pipiens
08/06/21 Sacramento 95624 13 Culex pipiens
08/06/21 Sacramento 95608 7 Culex pipiens
08/06/21 Sacramento 95608 7 Culex pipiens
08/06/21 Sacramento 95608 45 Culex pipiens
08/06/21 Sacramento 95608 26 Culex pipiens
08/10/21 Yolo 95616 50 Culex tarsalis
08/10/21 Sacramento 95628 50 Culex tarsalis
08/10/21 Sacramento 95624 1 Culex tarsalis
08/13/21 Yolo 95776 50 Culex tarsalis
08/13/21 Yolo 95776 50 Culex tarsalis
08/13/21 Sacramento 95843 9 Culex pipiens
08/13/21 Sacramento 95757 50 Culex pipiens
08/13/21 Sacramento 95757 21 Culex pipiens
08/13/21 Sacramento 95638 50 Culex tarsalis
08/13/21 Sacramento 95638 10 Culex tarsalis
08/13/21 Sacramento 95632 28 Culex pipiens
08/17/21 Yolo 95937 50 Culex tarsalis
08/17/21 Sacramento 95624 5 Culex tarsalis
08/20/21 Yolo 50 Culex tarsalis
08/20/21 Yolo 50 Culex tarsalis
08/20/21 Yolo 95776 50 Culex tarsalis
08/20/21 Yolo 95695 50 Culex tarsalis
08/20/21 Yolo 95616 50 Culex tarsalis
08/20/21 Yolo 95616 50 Culex tarsalis
08/20/21 Yolo 95616 50 Culex tarsalis
08/20/21 Sacramento 5 Culex pipiens
08/20/21 Sacramento 95660 3 Culex pipiens
08/20/21 Sacramento 95638 12 Culex pipiens
08/20/21 Sacramento 95632 11 Culex pipiens
08/20/21 Sacramento 95621 4 Culex pipiens
08/20/21 Sacramento 95610 7 Culex pipiens
08/20/21 Sacramento 94571 50 Culex tarsalis
08/24/21 Yolo 50 Culex tarsalis
08/24/21 Yolo 95695 18 Culex tarsalis
08/24/21 Yolo 95645 8 Culex tarsalis
08/24/21 Yolo 95645 1 Culex tarsalis
08/24/21 Sacramento 95758 5 Culex tarsalis
08/24/21 Sacramento 95628 15 Culex tarsalis
08/26/21 Sacramento 95621 4 Culex tarsalis
08/27/21 Yolo 95776 50 Culex tarsalis
08/27/21 Yolo 95776 11 Culex tarsalis
08/27/21 Yolo 95695 37 Culex tarsalis
08/27/21 Yolo 95616 50 Culex tarsalis
08/27/21 Yolo 95616 14 Culex pipiens
08/27/21 Sacramento 95843 10 Culex tarsalis
08/27/21 Sacramento 95828 25 Culex pipiens
08/27/21 Sacramento 95828 11 Culex pipiens
08/27/21 Sacramento 95821 6 Culex pipiens
08/27/21 Sacramento 95757 50 Culex tarsalis
08/27/21 Sacramento 95693 48 Culex pipiens
08/27/21 Sacramento 95670 50 Culex pipiens
08/27/21 Sacramento 95670 29 Culex pipiens
08/27/21 Sacramento 95660 2 Culex pipiens
08/27/21 Sacramento 95638 50 Culex tarsalis
08/27/21 Sacramento 95638 50 Culex pipiens
08/27/21 Sacramento 95638 38 Culex tarsalis
08/27/21 Sacramento 95632 50 Culex pipiens
08/27/21 Sacramento 95632 50 Culex pipiens
08/27/21 Sacramento 95632 33 Culex tarsalis
08/27/21 Sacramento 95632 18 Culex tarsalis
08/27/21 Sacramento 95632 14 Culex pipiens
08/27/21 Sacramento 95621 4 Culex pipiens
08/27/21 Sacramento 95608 4 Culex tarsalis
08/27/21 Sacramento 95608 2 Culex tarsalis
08/31/21 Yolo 95937 50 Culex tarsalis
08/31/21 Yolo 95698 20 Culex tarsalis
08/31/21 Sacramento 95837 50 Culex tarsalis
08/31/21 Sacramento 95758 7 Culex tarsalis
08/31/21 Sacramento 95624 14 Culex pipiens
09/02/21 Sacramento 95670 40 Culex pipiens
09/03/21 Yolo 95776 24 Culex tarsalis
09/03/21 Sacramento 95757 21 Culex tarsalis
09/03/21 Sacramento 95693 1 Culex pipiens
09/03/21 Sacramento 95632 50 Culex pipiens
09/03/21 Sacramento 95632 50 Culex pipiens
09/03/21 Sacramento 95632 26 Culex pipiens
09/03/21 Sacramento 95632 10 Culex tarsalis
09/08/21 Yolo 50 Culex tarsalis
09/08/21 Yolo 95698 50 Culex tarsalis
09/08/21 Yolo 95695 50 Culex tarsalis
09/08/21 Yolo 95695 50 Culex tarsalis
09/08/21 Yolo 95695 50 Culex tarsalis
09/08/21 Yolo 95645 50 Culex tarsalis
09/08/21 Yolo 95618 50 Culex tarsalis
09/08/21 Yolo 95618 50 Culex tarsalis
09/08/21 Yolo 95618 1 Culex pipiens
09/08/21 Yolo 95616 14 Culex pipiens
09/08/21 Sacramento 95835 25 Culex tarsalis
09/08/21 Sacramento 95829 22 Culex tarsalis
09/08/21 Sacramento 95823 28 Culex pipiens
09/08/21 Sacramento 95822 7 Culex tarsalis
09/08/21 Sacramento 95624 5 Culex tarsalis
09/10/21 Yolo 95776 18 Culex pipiens
09/10/21 Sacramento 95693 27 Culex pipiens
09/10/21 Sacramento 95638 50 Culex tarsalis
09/10/21 Sacramento 95624 26 Culex pipiens
09/14/21 Yolo 50 Culex tarsalis
09/14/21 Yolo 95695 50 Culex tarsalis
09/14/21 Yolo 95645 50 Culex tarsalis
09/14/21 Yolo 95618 50 Culex tarsalis
09/14/21 Sacramento 22 Culex pipiens
09/14/21 Sacramento 95843 8 Culex tarsalis
09/14/21 Sacramento 95837 29 Culex tarsalis
09/14/21 Sacramento 95632 20 Culex pipiens
09/14/21 Sacramento 95618 5 Culex pipiens
09/17/21 Sacramento 95864 1 Culex tarsalis
09/17/21 Sacramento 95628 32 Culex pipiens
09/17/21 Sacramento 95628 1 Culex tarsalis
09/17/21 Sacramento 95624 10 Culex tarsalis
09/21/21 Yolo 3 Culex pipiens
09/21/21 Yolo 95616 50 Culex tarsalis
09/21/21 Yolo 95616 42 Culex tarsalis
09/21/21 Sacramento 95837 50 Culex tarsalis
09/21/21 Sacramento 95628 31 Culex pipiens
09/21/21 Sacramento 95624 50 Culex tarsalis
09/21/21 Sacramento 95624 50 Culex pipiens
09/21/21 Sacramento 95624 48 Culex pipiens
09/21/21 Sacramento 95624 30 Culex pipiens
09/21/21 Sacramento 95624 15 Culex pipiens
09/23/21 Sacramento 95758 38 Culex pipiens
09/24/21 Yolo 95776 39 Culex pipiens
09/24/21 Sacramento 95742 21 Culex pipiens
09/24/21 Sacramento 95632 50 Culex pipiens
09/24/21 Sacramento 95632 38 Culex tarsalis

If you see a bird, particularly a crow or magpie, lacking signs of trauma that has been dead for less than 24 hours, please call 1-877-WNV-BIRD (1-877-968-2473) or report it online here. Crows and magpies are particularly susceptible to the disease, so they make excellent early warning sentinels for virus activity in our area.

WNV IN YOUR AREA?

wnvactivity

MAP OF WNV ACTIVITY

Click here to show confirmed positive samples of West Nile virus activity in Sacramento and Yolo counties to date.