2018 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 in 2018. Archived data is available for 2007 activity, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, and 2016.

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

West Nile virus positives total for 2018
Sacramento
County
Yolo
County
Total
Sentinel Animals448
Mosquito Samples30090390
Dead Birds24141282

View a map of West Nile Virus Activity

Below you will find the breakdown of West Nile virus activity

Sentinel animals tested positive for West Nile virus:
TestedCountyCityZip Code
08/28/2018Dunnigan95937
08/28/2018YoloKnights Landing95645
09/07/2018SacramentoElverta95626
09/07/2018SacramentoElverta95626
09/07/2018SacramentoElverta95626
09/07/2018SacramentoElverta95626
09/07/2018Dunnigan95937
09/07/2018Dunnigan95937

Mosquito Samples tested positive for West Nile virus:
CollectedCountyCityZip CodeSpecies (# of Mosquitoes in Trap)
05/30/2018SacramentoElk Grove95624Cx tarsalis (50)
06/07/2018SacramentoElk Grove95757Cx pipiens (50)
06/15/2018SacramentoRancho Cordova95670Cx pipiens (39)
06/19/2018SacramentoSacramento95822Cx pipiens (50)
06/19/2018SacramentoSacramento95832Cx pipiens (28)
06/19/2018SacramentoSacramento95822Cx pipiens (45)
06/19/2018SacramentoSacramento95815Cx tarsalis (9)
06/19/2018SacramentoSacramento95815Cx pipiens (38)
06/19/2018SacramentoSacramento95660Cx pipiens (50)
06/19/2018SacramentoSacramento95842Cx pipiens (13)
06/19/2018SacramentoSacramento95835Cx pipiens (50)
06/19/2018SacramentoSacramento95831Cx pipiens (50)
06/19/2018SacramentoSacramento95831Cx pipiens (50)
06/26/2018SacramentoSacramento95822Cx pipiens (19)
06/26/2018SacramentoSacramento95822Cx pipiens (50)
06/26/2018SacramentoSacramento, CA95838Cx pipiens (30)
06/26/2018SacramentoSacramento, CA95838Cx pipiens (50)
06/26/2018SacramentoSacramento95831Cx pipiens (50)
06/26/2018SacramentoElk Grove95757Cx pipiens (31)
06/26/2018SacramentoElk Grove95624Cx pipiens (50)
06/26/2018SacramentoElk Grove95624Cx pipiens (43)
06/26/2018SacramentoElk Grove95758Cx pipiens (50)
06/28/2018SacramentoSacramento95831Cx pipiens (50)
06/28/2018SacramentoSacramento95831Cx pipiens (50)
06/29/2018SacramentoElk Grove95624Cx tarsalis (19)
06/29/2018SacramentoElk Grove95624Cx pipiens (50)
06/28/2018SacramentoElk Grove95757Cx pipiens (37)
06/28/2018SacramentoCitrus Heights95621Cx pipiens (9)
06/28/2018SacramentoFolsom95630Cx tarsalis (5)
06/28/2018SacramentoGalt95632Cx tarsalis (1)
06/28/2018SacramentoWilton95693Cx tarsalis (1)
06/28/2018SacramentoWilton95693Cx tarsalis (30)
07/02/2018SacramentoElk Grove95757Cx pipiens (2)
07/02/2018SacramentoElk Grove95757Cx pipiens (50)
07/02/2018SacramentoSacramento95815Cx pipiens (26)
07/02/2018SacramentoSacramento, CA95838Cx tarsalis (50)
07/02/2018SacramentoSacramento, CA95838Cx tarsalis (50)
07/02/2018SacramentoSacramento, CA95838Cx tarsalis (50)
07/02/2018SacramentoSacramento, CA95838Cx pipiens (50)
07/02/2018YoloDavis95616Cx pipiens (26)
07/02/2018SacramentoSacramento95831Cx pipiens (50)
07/02/2018SacramentoSacramento95831Cx pipiens (50)
07/02/2018SacramentoSacramento95831Cx pipiens (50)
07/02/2018SacramentoElk Grove95624Cx pipiens (50)
07/06/2018SacramentoFair Oaks95628Cx pipiens (8)
07/06/2018SacramentoCitrus Heights95621Cx pipiens (50)
07/06/2018SacramentoCitrus Heights95621Cx pipiens (50)
07/10/2018SacramentoElk Grove95758Cx pipiens (29)
07/10/2018SacramentoSacramento95831Cx pipiens (50)
07/10/2018SacramentoSacramento95831Cx pipiens (32)
07/10/2018SacramentoElk Grove95757Cx pipiens (50)
07/10/2018SacramentoElk Grove95757Cx pipiens (9)
07/10/2018SacramentoSacramento95831Cx pipiens (49)
07/10/2018SacramentoElk Grove95624Cx pipiens (18)
07/10/2018SacramentoElk Grove95624Cx tarsalis (11)
07/10/2018SacramentoElk Grove95624Cx pipiens (50)
07/10/2018SacramentoElk Grove95624Cx pipiens (20)
07/10/2018SacramentoElk Grove95624Cx pipiens (27)
07/10/2018SacramentoElk Grove95823Cx tarsalis (50)
07/10/2018SacramentoElk Grove95624Cx pipiens (50)
07/10/2018YoloDavis95618Cx pipiens (3)
07/10/2018SacramentoSacramento95831Cx pipiens (43)
07/10/2018SacramentoSacramento95819Cx pipiens (23)
07/10/2018SacramentoSacramento95832Cx pipiens (50)
07/10/2018SacramentoSacramento95822Cx pipiens (50)
07/10/2018SacramentoSacramento95842Cx tarsalis (1)
07/10/2018SacramentoSacramento95842Cx pipiens (50)
07/10/2018SacramentoSacramento95842Cx pipiens (50)
07/10/2018SacramentoSacramento95815Cx pipiens (25)
07/10/2018SacramentoSacramento95833Cx pipiens (52)
07/10/2018SacramentoElk Grove95758Cx pipiens (50)
07/10/2018SacramentoElk Grove95758Cx pipiens (50)
07/10/2018SacramentoElk Grove95758Cx pipiens (50)
07/10/2018SacramentoElk Grove95758Cx pipiens (50)
07/10/2018SacramentoElk Grove95758Cx pipiens (50)
07/10/2018SacramentoSacramento95828Cx tarsalis (29)
07/10/2018SacramentoSacramento95828Cx pipiens (50)
07/10/2018SacramentoSacramento95828Cx pipiens (31)
07/13/2018SacramentoElk Grove95624Cx pipiens (50)
07/13/2018SacramentoElk Grove95624Cx pipiens (4)
07/13/2018SacramentoSacramento95823Cx tarsalis (50)
07/13/2018SacramentoSacramento95823Cx pipiens (50)
07/13/2018SacramentoSacramento95823Cx pipiens (43)
07/13/2018SacramentoSacramento95823Cx pipiens (18)
07/13/2018SacramentoElk Grove95757Cx pipiens (14)
07/13/2018SacramentoElk Grove95757Cx tarsalis (1)
07/13/2018SacramentoElk Grove95757Cx pipiens (50)
07/13/2018SacramentoElk Grove95757Cx pipiens (50)
07/13/2018SacramentoElk Grove95757Cx pipiens (50)
07/13/2018SacramentoCitrus Heights95621Cx tarsalis (14)
07/13/2018SacramentoCitrus Heights95621Cx pipiens (6)
07/13/2018SacramentoCitrus Heights95621Cx pipiens (10)
07/13/2018SacramentoRancho Cordova95670Cx pipiens (10)
07/13/2018SacramentoWilton95693Cx tarsalis (3)
07/13/2018SacramentoWilton95693Cx tarsalis (6)
07/13/2018SacramentoWilton95693Cx pipiens (19)
07/13/2018SacramentoGalt95632Cx pipiens (1)
07/13/2018YoloWoodland95695Cx pipiens (9)
07/13/2018YoloWoodland95776Cx tarsalis (50)
07/17/2018SacramentoSacramento95828Cx tarsalis (4)
07/17/2018SacramentoSacramento95828Cx pipiens (50)
07/17/2018SacramentoSacramento95828Cx pipiens (15)
07/17/2018SacramentoSacramento95828Cx pipiens (6)
07/17/2018SacramentoElk Grove95758Cx pipiens (16)
07/17/2018YoloDavis95618Cx pipiens (8)
07/17/2018YoloDavis95616Cx pipiens (50)
07/17/2018YoloDavis95616Cx pipiens (7)
07/17/2018SacramentoSacramento95819Cx pipiens (43)
07/17/2018SacramentoSacramento95828Cx pipiens (50)
07/17/2018SacramentoSacramento95822Cx pipiens (50)
07/17/2018SacramentoSacramento95822Cx pipiens (29)
07/17/2018SacramentoSacramento95833Cx pipiens (4)
07/17/2018SacramentoSacramento95842Cx pipiens (9)
07/17/2018SacramentoSacramento95842Cx pipiens (22)
07/17/2018SacramentoSacramento95815Cx tarsalis (50)
07/17/2018SacramentoSacramento, CA95838Cx pipiens (50)
07/17/2018SacramentoSacramento, CA95838Cx pipiens (29)
07/17/2018SacramentoSacramento95837Cx tarsalis (50)
07/17/2018SacramentoSacramento95828Cx tarsalis (10)
07/17/2018SacramentoSacramento95828Cx pipiens (21)
07/17/2018SacramentoSacramento95828Cx pipiens (50)
07/17/2018SacramentoElk Grove95624Cx pipiens (18)
07/17/2018SacramentoElk Grove95624Cx tarsalis (9)
07/17/2018SacramentoElk Grove95624Cx pipiens (50)
07/17/2018SacramentoElk Grove95624Cx pipiens (50)
07/17/2018SacramentoElk Grove95624Cx pipiens (23)
07/19/2018SacramentoCx pipiens (19)
07/19/2018SacramentoElk Grove95624Cx pipiens (7)
07/19/2018SacramentoElk Grove95757Cx pipiens (34)
07/19/2018SacramentoElk Grove95823Cx pipiens (42)
07/19/2018SacramentoElk Grove95823Cx pipiens (28)
07/19/2018SacramentoElk Grove95757Cx pipiens (35)
07/19/2018SacramentoSacramento95832Cx pipiens (12)
07/19/2018SacramentoElk Grove95624Cx pipiens (14)
07/19/2018SacramentoSacramento95831Cx pipiens (6)
07/19/2018SacramentoSacramento95831Cx pipiens (37)
07/19/2018SacramentoSacramento95822Cx tarsalis (4)
07/19/2018SacramentoElk Grove95758Cx pipiens (50)
07/19/2018SacramentoElk Grove95758Cx pipiens (50)
07/19/2018SacramentoSacramento95831Cx pipiens (50)
07/19/2018SacramentoSacramento95831Cx pipiens (50)
07/19/2018SacramentoSacramento95823Cx tarsalis (7)
07/19/2018SacramentoSacramento95823Cx pipiens (50)
07/19/2018SacramentoSacramento95823Cx pipiens (49)
07/19/2018SacramentoSacramento95831Cx tarsalis (10)
07/19/2018SacramentoSacramento95831Cx pipiens (50)
07/19/2018SacramentoSacramento95831Cx pipiens (50)
07/19/2018SacramentoSacramento95831Cx pipiens (50)
07/19/2018SacramentoSacramento95831Cx pipiens (50)
07/20/2018SacramentoElk Grove95757Cx tarsalis (28)
07/20/2018SacramentoElk Grove95757Cx tarsalis (8)
07/20/2018SacramentoElk Grove95757Cx pipiens (12)
07/20/2018SacramentoElk Grove95757Cx tarsalis (2)
07/20/2018SacramentoElk Grove95757Cx pipiens (39)
07/20/2018SacramentoElk Grove95757Cx pipiens (43)
07/20/2018SacramentoCx tarsalis (50)
07/20/2018SacramentoElk Grove95624Cx tarsalis (50)
07/20/2018SacramentoWilton95693Cx pipiens (9)
07/20/2018YoloWoodland95695Cx pipiens (7)
07/20/2018YoloWoodland95776Cx tarsalis (2)
07/20/2018SacramentoSacramento95826Cx pipiens (50)
07/20/2018SacramentoCitrus Heights95621Cx pipiens (31)
07/20/2018SacramentoCitrus Heights95621Cx pipiens (16)
07/20/2018SacramentoCarmichael95608Cx pipiens (5)
07/20/2018YoloWoodland95776Cx tarsalis (50)
07/20/2018SacramentoFolsom95630Cx pipiens (30)
07/24/2018SacramentoSacramento95822Cx pipiens (50)
07/24/2018SacramentoSacramento95828Cx pipiens (12)
07/24/2018SacramentoSacramento95833Cx pipiens (16)
07/24/2018SacramentoSacramento, CA95838Cx tarsalis (45)
07/24/2018SacramentoSacramento, CA95838Cx pipiens (36)
07/24/2018SacramentoSacramento, CA95838Cx pipiens (19)
07/24/2018SacramentoSacramento95835Cx pipiens (23)
07/24/2018YoloDunnigan95937Cx tarsalis (50)
07/24/2018YoloZamora95698Cx tarsalis (50)
07/24/2018YoloZamora95698Cx pipiens (1)
07/24/2018YoloZamora95698Cx pipiens (3)
07/24/2018YoloWoodland95695Cx tarsalis (50)
07/26/2018SacramentoElk Grove95823Cx tarsalis (15)
07/26/2018SacramentoSacramento95831Cx pipiens (1)
07/27/2018YoloWoodland95695Cx pipiens (7)
07/27/2018SacramentoCx pipiens (50)
07/27/2018SacramentoWilton95693Cx tarsalis (41)
07/27/2018SacramentoSacramento95832Cx tarsalis (50)
07/27/2018SacramentoCitrus Heights95621Cx pipiens (20)
07/27/2018SacramentoCitrus Heights95621Cx pipiens (5)
07/27/2018SacramentoIsleton95641Cx tarsalis (50)
07/27/2018SacramentoCitrus Heights95621Cx pipiens (12)
07/27/2018SacramentoRancho Cordova95670Cx pipiens (4)
07/31/2018SacramentoOrangevale95662Cx pipiens (38)
07/31/2018SacramentoSacramento95660Cx pipiens (23)
07/31/2018SacramentoSacramento, CA95838Cx pipiens (45)
07/31/2018YoloDavis95618Cx tarsalis (50)
07/31/2018YoloDavis95618Cx tarsalis (50)
07/31/2018YoloDavis95618Cx tarsalis (50)
07/31/2018SacramentoSacramento95835Cx tarsalis (18)
07/31/2018SacramentoSacramento95835Cx tarsalis (50)
07/31/2018SacramentoSacramento95835Cx tarsalis (50)
07/31/2018SacramentoSacramento95842Cx pipiens (21)
07/31/2018YoloWoodland95695Cx tarsalis (50)
07/31/2018YoloWoodland95695Cx tarsalis (50)
07/31/2018YoloDunnigan95937Cx pipiens (18)
07/31/2018SacramentoSacramento95822Cx pipiens (14)
07/31/2018SacramentoSacramento95832Cx pipiens (24)
08/03/2018SacramentoCitrus Heights95621Cx pipiens (7)
08/03/2018SacramentoFair Oaks95628Cx pipiens (25)
08/03/2018SacramentoCarmichael95608Cx pipiens (14)
08/03/2018SacramentoOrangevale95662Cx pipiens (33)
08/03/2018SacramentoCitrus Heights95610Cx pipiens (48)
08/03/2018SacramentoFair Oaks95628Cx pipiens (24)
08/03/2018SacramentoSacramento95842Cx pipiens (41)
08/03/2018SacramentoNorth Highlands95660Cx pipiens (4)
08/03/2018SacramentoNorth Highlands95660Cx pipiens (16)
08/03/2018SacramentoAntelope95843Cx tarsalis (1)
08/03/2018SacramentoSacramento, CA95842Cx tarsalis (1)
08/03/2018SacramentoSacramento, CA95842Cx pipiens (23)
08/03/2018YoloWoodland95776Cx tarsalis (18)
08/03/2018YoloWoodland95695Cx tarsalis (50)
08/03/2018YoloWoodland95776Cx tarsalis (50)
08/03/2018SacramentoElk Grove95757Cx pipiens (48)
08/03/2018SacramentoElk Grove95757Cx tarsalis (29)
08/03/2018SacramentoElk Grove95757Cx pipiens (50)
08/03/2018SacramentoCx pipiens (50)
08/03/2018SacramentoWilton95693Cx pipiens (4)
08/03/2018SacramentoWilton95693Cx tarsalis (10)
08/02/2018SacramentoIsleton95641Cx tarsalis (50)
08/07/2018SacramentoSouth Watt Avenue95829Cx tarsalis (30)
08/07/2018SacramentoSouth Watt Avenue95829Cx pipiens (9)
08/07/2018SacramentoSouth Watt Avenue95829Cx pipiens (24)
08/07/2018SacramentoElk Grove95758Cx pipiens (6)
08/07/2018SacramentoSacramento95831Cx pipiens (27)
08/07/2018SacramentoElk Grove95758Cx tarsalis (50)
08/07/2018SacramentoSacramento95828Cx pipiens (3)
08/07/2018SacramentoSacramento95828Cx pipiens (22)
08/07/2018SacramentoElk Grove95624Cx tarsalis (50)
08/07/2018SacramentoElk Grove95624Cx tarsalis (47)
08/07/2018SacramentoSacramento95831Cx tarsalis (16)
08/07/2018YoloDavis95616Cx tarsalis (50)
08/07/2018YoloDavis95616Cx tarsalis (50)
08/07/2018YoloDavis95616Cx tarsalis (19)
08/07/2018YoloDavis95616Cx tarsalis (50)
08/07/2018YoloDavis95618Cx tarsalis (50)
08/07/2018YoloDavis95618Cx tarsalis (50)
08/07/2018YoloDavis95618Cx tarsalis (50)
08/07/2018YoloDavis95618Cx tarsalis (50)
08/07/2018YoloDavis95618Cx pipiens (6)
08/07/2018SacramentoElverta95626Cx pipiens (3)
08/07/2018SacramentoSacramento95835Cx tarsalis (50)
08/07/2018SacramentoSacramento95835Cx tarsalis (50)
08/07/2018SacramentoSacramento, CA95838Cx tarsalis (50)
08/07/2018SacramentoSacramento, CA95838Cx tarsalis (50)
08/07/2018SacramentoSacramento, CA95838Cx pipiens (50)
08/07/2018SacramentoSacramento, CA95838Cx pipiens (50)
08/07/2018SacramentoSacramento, CA95838Cx pipiens (50)
08/07/2018SacramentoSacramento, CA95838Cx pipiens (50)
08/07/2018YoloKnights Landing95645Cx tarsalis (25)
08/07/2018SacramentoSacramento95837Cx tarsalis (50)
08/07/2018YoloDunnigan95937Cx tarsalis (50)
08/07/2018YoloZamora95698Cx tarsalis (50)
08/07/2018YoloDunnigan95937Cx tarsalis (50)
08/07/2018YoloDunnigan95937Cx tarsalis (50)
08/07/2018YoloDunnigan95937Cx tarsalis (50)
08/09/2018SacramentoCitrus Heights95621Cx pipiens (50)
08/09/2018SacramentoCitrus Heights95610Cx pipiens (18)
08/09/2018SacramentoSacramento, CA95842Cx pipiens (11)
08/09/2018SacramentoSacramento, CA95842Cx pipiens (17)
08/09/2018SacramentoCitrus Heights95610Cx pipiens (50)
08/09/2018SacramentoCx pipiens (14)
08/09/2018SacramentoSacramento95842Cx tarsalis (2)
08/09/2018SacramentoAntelope95843Cx pipiens (5)
08/09/2018SacramentoAntelope95843Cx tarsalis (25)
08/09/2018SacramentoSacramento95843Cx tarsalis (30)
08/10/2018YoloWoodland95695Cx tarsalis (50)
08/10/2018YoloWoodland95695Cx tarsalis (50)
08/10/2018YoloWoodland95695Cx tarsalis (36)
08/10/2018YoloWoodland95695Cx tarsalis (50)
08/10/2018YoloWoodland95776Cx tarsalis (50)
08/10/2018YoloWoodland95776Cx tarsalis (50)
08/10/2018YoloWoodland95776Cx tarsalis (50)
08/10/2018YoloWoodland95776Cx tarsalis (50)
08/10/2018YoloWoodland95695Cx pipiens (3)
08/10/2018YoloDavisCx tarsalis (16)
08/10/2018YoloDavisCx tarsalis (6)
08/10/2018SacramentoWilton95693Cx pipiens (4)
08/10/2018SacramentoGalt95632Cx tarsalis (11)
08/10/2018SacramentoRancho Cordova95742Cx tarsalis (7)
08/10/2018SacramentoRancho MurietaCx pipiens (2)
08/10/2018SacramentoIsleton95641Cx pipiens (32)
08/10/2018SacramentoIsleton95641Cx tarsalis (50)
08/10/2018SacramentoIsleton95641Cx pipiens (20)
08/13/2018SacramentoSacramento95831Cx tarsalis (11)
08/13/2018YoloDunnigan95937Cx tarsalis (50)
08/13/2018YoloDunnigan95937Cx tarsalis (50)
08/13/2018YoloDunnigan95937Cx tarsalis (50)
08/13/2018SacramentoSacramento95837Cx tarsalis (50)
08/13/2018SacramentoSacramento95837Cx tarsalis (50)
08/13/2018YoloWoodland95695Cx tarsalis (50)
08/16/2018YoloDavis95618Cx tarsalis (50)
08/16/2018SacramentoSacramento, CA95842Cx pipiens (10)
08/16/2018SacramentoSacramento, CA95838Cx pipiens (50)
08/16/2018SacramentoSacramento, CA95838Cx pipiens (7)
08/16/2018SacramentoWilton95693Cx pipiens (5)
08/16/2018SacramentoSacramento95827Cx pipiens (25)
08/17/2018SacramentoCx pipiens (12)
08/17/2018YoloWoodland95695Cx pipiens (44)
08/17/2018YoloDavisCx tarsalis (50)
08/17/2018YoloWoodland95776Cx pipiens (8)
08/17/2018YoloWoodland95776Cx pipiens (32)
08/17/2018YoloWoodland95695Cx pipiens (33)
08/17/2018YoloWoodland95695Cx pipiens (7)
08/17/2018YoloWoodland95776Cx tarsalis (50)
08/17/2018YoloWoodland95776Cx tarsalis (45)
08/17/2018SacramentoHood95757Cx pipiens (5)
08/21/2018SacramentoSacramento95822Cx tarsalis (6)
08/21/2018SacramentoSacramento95822Cx pipiens (18)
08/21/2018YoloWoodlandCx tarsalis (1)
08/21/2018SacramentoSacramento95837Cx tarsalis (50)
08/21/2018SacramentoSacramento95837Cx tarsalis (50)
08/21/2018SacramentoSacramento95837Cx tarsalis (12)
08/21/2018YoloWoodland95695Cx tarsalis (50)
08/21/2018YoloDunnigan95937Cx tarsalis (50)
08/21/2018YoloDunnigan95937Cx tarsalis (50)
08/21/2018SacramentoSacramento95864Cx pipiens (20)
08/22/2018YoloDavis95616Cx pipiens (3)
08/22/2018YoloDavis95618Cx tarsalis (50)
08/22/2018YoloDavis95616Cx tarsalis (50)
08/22/2018SacramentoSacramento95841Cx pipiens (2)
08/22/2018SacramentoSacramento95834Cx pipiens (3)
08/24/2018SacramentoOrangevale95662Cx pipiens (5)
08/24/2018SacramentoElk Grove95757Cx tarsalis (16)
08/24/2018SacramentoSacramento95832Cx tarsalis (50)
08/24/2018SacramentoElk Grove95757Cx pipiens (50)
08/24/2018SacramentoElk Grove95757Cx pipiens (50)
08/24/2018SacramentoElk Grove95757Cx pipiens (50)
08/24/2018YoloDavisCx tarsalis (28)
08/24/2018YoloWoodland95695Cx tarsalis (50)
08/24/2018YoloWoodland95776Cx tarsalis (50)
08/28/2018YoloDavis95618Cx tarsalis (50)
08/28/2018SacramentoSacramento95835Cx pipiens (2)
08/28/2018SacramentoSacramento95837Cx tarsalis (50)
08/28/2018YoloDunnigan95937Cx tarsalis (50)
08/28/2018YoloDunnigan95937Cx pipiens (50)
08/28/2018SacramentoSacramento95834Cx tarsalis (50)
08/28/2018YoloDunnigan95937Cx tarsalis (50)
08/28/2018YoloDunnigan95937Cx tarsalis (50)
08/28/2018YoloDunnigan95937Cx tarsalis (50)
08/30/2018SacramentoElk Grove95757Cx pipiens (50)
08/31/2018YoloDavisCx tarsalis (50)
08/31/2018YoloWoodland95776Cx tarsalis (50)
08/31/2018SacramentoRancho Cordova95670Cx pipiens (11)
09/05/2018SacramentoSacramento95822Cx pipiens (9)
09/05/2018SacramentoElk Grove95757Cx tarsalis (32)
09/05/2018SacramentoElk Grove95757Cx pipiens (50)
09/05/2018SacramentoElk Grove95757Cx pipiens (13)
09/05/2018SacramentoSacramento95864Cx pipiens (46)
09/05/2018SacramentoSacramento95815Cx pipiens (5)
09/05/2018YoloWoodland95695Cx tarsalis (50)
09/05/2018YoloKnights Landing95645Cx tarsalis (29)
09/05/2018SacramentoSacramento95837Cx tarsalis (50)
09/05/2018YoloDunnigan95937Cx pipiens (50)
09/07/2018SacramentoElk Grove95757Cx tarsalis (44)
09/07/2018SacramentoHood95757Cx pipiens (50)
09/07/2018YoloWoodland95776Cx tarsalis (50)
09/07/2018YoloWest Sacramento95691Cx tarsalis (10)
09/07/2018SacramentoGalt95632Cx tarsalis (4)
09/07/2018SacramentoWilton95693Cx tarsalis (50)
09/07/2018SacramentoWilton95693Cx tarsalis (7)
09/07/2018SacramentoRancho Cordova95670Cx pipiens (4)
09/07/2018SacramentoCx pipiens (44)
09/07/2018SacramentoElk Grove95758Cx pipiens (42)
09/11/2018SacramentoElk Grove95757Cx pipiens (50)
09/11/2018Sacramento95820Cx pipiens (50)
09/11/2018SacramentoSacramento95842Cx tarsalis (2)
09/11/2018YoloDunnigan95937Cx pipiens (50)
09/11/2018YoloDunnigan95937Cx pipiens (12)
09/11/2018SacramentoSacramento95837Cx tarsalis (50)
09/11/2018SacramentoSacramento95837Cx tarsalis (36)
09/12/2018SacramentoCx tarsalis (1)
09/12/2018SacramentoCx pipiens (18)
09/12/2018SacramentoElk Grove95758Cx pipiens (17)
09/14/2018SacramentoIsleton95641Cx tarsalis (50)
09/18/2018SacramentoElverta95626Cx pipiens (3)
09/21/2018SacramentoIsleton95641Cx tarsalis (50)
09/15/2018SacramentoElk Grove95757Cx pipiens (50)
09/15/2018YoloDavis95618Cx tarsalis (50)
09/15/2018SacramentoSacramento95864Cx pipiens (3)
09/27/2018SacramentoCx pipiens (21)
09/27/2018SacramentoCx pipiens (50)
09/27/2018SacramentoCx pipiens (23)
10/05/2018SacramentoWalnut Grove95690Cx tarsalis (50)

Dead birds tested positive for West Nile virus:
CollectedCountyCityZip CodeSpecies
05/23/2018SacramentoSacramento95815American Crow #18-379
05/31/2018SacramentoSacramento95822American Crow #18-456
05/31/2018SacramentoElk Grove95624California Scrub-Jay #18-463
06/06/2018SacramentoSacramento95825Yellow-billed Magpie #18-572
06/13/2018SacramentoSacramento95815American Crow #18-624
06/13/2018SacramentoFair Oaks95628California Scrub-Jay #18-626
06/20/2018SacramentoElk Grove95624California Scrub-Jay #18-754
06/20/2018SacramentoSacramento95831American Crow #18-742
06/27/2018SacramentoElk Grove95624Northern Mockingbird #18-849
06/27/2018SacramentoSacramento95821American Crow #18-853
06/27/2018SacramentoElk Grove95624California Scrub-Jay #18-859
06/27/2018SacramentoElk Grove95624Cooper's Hawk #18-864
06/27/2018YoloWest Sacramento95691American Crow #18-871
07/02/2018SacramentoSacramento95815American Crow #18-881
07/02/2018SacramentoSacramento95822California Scrub-Jay #18-916
07/02/2018SacramentoSacramento95822California Scrub-Jay #18-917
07/02/2018SacramentoElk Grove95624American Robin #18-919
07/02/2018SacramentoSacramento95821Northern Mockingbird #18-921
07/02/2018SacramentoSacramento95831American Crow #18-923
07/02/2018SacramentoElk Grove95624California Scrub-Jay #18-929
07/02/2018SacramentoSacramento95814Cooper's Hawk #18-930
07/02/2018SacramentoSacramento95822California Scrub-Jay #18-932
07/02/2018YoloWest Sacramento95691Nuttall's Woodpecker #18-936
07/04/2018SacramentoSacramento95818American Crow #18-943
07/04/2018SacramentoSacramento95621California Scrub-Jay #18-949
07/04/2018SacramentoSacramento95816Anna's Hummingbird #18-958
07/04/2018SacramentoElk Grove95624Lesser Goldfinch #18-964
07/04/2018SacramentoSacramento95831American Crow #18-969
07/09/2018YoloWest Sacramento95691American Robin #18-987
07/09/2018SacramentoElk Grove95624Anna's Hummingbird #18-988
07/09/2018SacramentoSacramento95831American Crow #18-993
07/09/2018SacramentoElk Grove95624American Robin #18-996
07/09/2018SacramentoSacramento95821American Crow #18-1001
07/11/2018SacramentoSacramento95829California Scrub-Jay #18-1007
07/11/2018SacramentoFair Oaks95628California Scrub-Jay #18-1010
07/11/2018YoloWest Sacramento95691American Crow #18-1026
07/11/2018SacramentoSacramento95814American Crow #18-1027
07/11/2018YoloWest Sacramento95691American Crow #18-1037
07/11/2018SacramentoSacramento95834Lesser Goldfinch #18-1040
07/11/2018SacramentoSacramento95821Yellow-billed Magpie #18-1043
07/11/2018SacramentoElk Grove95624American Crow #18-1048
07/16/2018SacramentoSacramento95838American Crow #18-1031
07/16/2018SacramentoSacramento95831California Scrub-Jay #18-1049
07/16/2018SacramentoCarmichael95608Yellow-billed Magpie #18-1050
07/16/2018SacramentoFair Oaks95628Yellow-billed Magpie #18-1051
07/16/2018SacramentoNorth Highlands95660Cooper's Hawk #18-1069
07/16/2018SacramentoSacramento95815Yellow-billed Magpie #18-1070
07/16/2018SacramentoCitrus Heights95621American Crow #18-1095
07/16/2018SacramentoSacramento95821Cooper's Hawk #18-1108
07/16/2018SacramentoSacramento95831American Crow #18-1109
07/16/2018SacramentoSacramento95815Yellow-billed Magpie #18-1112
07/16/2018SacramentoSacramento95693Red-shouldered Hawk #18-1119
07/16/2018SacramentoSacramento95825Yellow-billed Magpie #18-1129
07/18/2018SacramentoCarmichael95608California Scrub-Jay #18-1138
07/18/2018SacramentoGalt95632California Scrub-Jay #18-1139
07/18/2018SacramentoElk Grove95624Northern Mockingbird #18-1140
07/18/2018SacramentoElk Grove95624Northern Mockingbird #18-1141
07/18/2018SacramentoRancho Cordova95670California Scrub-Jay #18-1144
07/18/2018SacramentoSacramento95831American Crow #18-1147
07/18/2018SacramentoSacramento95831California Scrub-Jay #18-1152
07/18/2018SacramentoSacramento95831California Scrub-Jay #18-1154
07/18/2018SacramentoSacramento95610Northern Mockingbird #18-1156
07/18/2018SacramentoSacramento95821American Crow #18-1158
07/18/2018SacramentoSacramento95842California Scrub-Jay #18-1167
07/18/2018SacramentoSacramento95831American Crow #18-1189
07/18/2018SacramentoSacramento95628California Scrub-Jay #18-1190
07/18/2018SacramentoElk Grove95624California Scrub-Jay #18-1191
07/18/2018SacramentoSacramento95826American Robin #18-1192
07/18/2018SacramentoSacramento95818American Crow #18-1195
07/18/2018SacramentoSacramento95819Northern Mockingbird #18-1196
07/18/2018YoloDavis95616California Scrub-Jay #18-1197
07/18/2018SacramentoSacramento95821American Robin #18-1198
07/18/2018SacramentoRancho Cordova95670California Scrub-Jay #18-1203
07/23/2018YoloWoodland95695American Crow #18-1200
07/23/2018YoloWoodland95695American Crow #18-1210
07/23/2018SacramentoSacramento95833American Crow #18-1211
07/23/2018SacramentoGalt95632California Scrub-Jay #18-1212
07/23/2018SacramentoSacramento95826American Crow #18-1213
07/23/2018SacramentoCarmichael95608Yellow-billed Magpie #18-1216
07/23/2018SacramentoCarmichael95608American Crow #18-1218
07/23/2018SacramentoSacramento95823Northern Mockingbird #18-1220
07/23/2018SacramentoSacramento95827Yellow-billed Magpie #18-1234
07/23/2018SacramentoSacramento95831American Crow #18-1236
07/23/2018SacramentoSacramento95816California Scrub-Jay #18-1238
07/23/2018SacramentoWilton95693California Scrub-Jay #18-1239
07/23/2018SacramentoSacramento95822California Scrub-Jay #18-1242
07/23/2018SacramentoSacramento95835House Finch #18-1243
07/25/2018SacramentoSacramento95624American Crow #18-1245
07/25/2018SacramentoSacramento95628Yellow-billed Magpie #18-1247
07/25/2018SacramentoSacramento95820Northern Mockingbird #18-1248
07/25/2018SacramentoElk Grove95624Northern Mockingbird #18-1265
07/25/2018SacramentoElk Grove95624American Crow #18-1267
07/25/2018SacramentoSacramento95814Western Screech Owl #18-1269
07/25/2018SacramentoWilton95693Western Bluebird #18-1305
07/25/2018SacramentoElk Grove95624American Crow #18-1312
07/25/2018SacramentoSacramento95820Northern Mockingbird #18-1314
07/25/2018SacramentoRancho Cordova95670California Scrub-Jay #18-1307
07/25/2018SacramentoRio Linda95673Yellow-billed Magpie #18-1311
07/25/2018SacramentoSacramento95841Yellow-billed Magpie #18-1313
07/25/2018SacramentoOrangevale95662House Sparrow #18-1317
07/25/2018SacramentoElk Grove95624Brewer's Blackbird #18-1320
07/25/2018SacramentoSacramento95831Lesser Goldfinch #18-1328
07/25/2018YoloYolo95697Yellow-billed Magpie #18-1330
07/25/2018SacramentoSacramento95825Yellow-billed Magpie #18-1331
07/25/2018SacramentoSacramento95628California Scrub-Jay #18-1333
07/25/2018SacramentoMcclellan95652American Crow #18-1334
07/25/2018SacramentoElk Grove95624American Crow #18-1337
07/25/2018SacramentoElverta95626American Crow #18-1273
07/25/2018SacramentoSacramento95822American Crow #18-1277
07/25/2018SacramentoRancho Cordova95670Yellow-billed Magpie #18-1282
07/25/2018SacramentoSacramento95831American Crow #18-1283
07/25/2018SacramentoElk Grove95624American Crow #18-1284
07/25/2018SacramentoGalt95632American Robin #18-1288
07/25/2018SacramentoSacramento95864California Scrub-Jay #18-1293
07/25/2018SacramentoSacramento95819Barn Owl #18-1298
07/30/2018SacramentoIsleton95641American Crow #18-1343
07/30/2018SacramentoSacramento95831California Scrub-Jay #18-1348
07/30/2018SacramentoSacramento95820American Crow #18-1350
07/30/2018SacramentoSacramento95831American Crow #18-1352
07/30/2018SacramentoElk Grove95757Northern Mockingbird #18-1354
07/30/2018SacramentoSacramento95821Yellow-billed Magpie #18-1359
07/30/2018SacramentoWilton95693Brewer's Blackbird #18-1360
07/30/2018SacramentoSacramento95827California Scrub-Jay #18-1362
07/30/2018SacramentoElk Grove95758California Scrub-Jay #18-1364
07/30/2018SacramentoElk Grove95624California Scrub-Jay #18-1366
07/30/2018SacramentoSacramento95827American Crow #18-1374
07/30/2018SacramentoCarmichael95608California Scrub-Jay #18-1383
07/30/2018SacramentoSacramento95831American Crow #18-1386
07/30/2018SacramentoSacramento95822Purple Finch #18-1388
07/30/2018YoloWest Sacramento95691California Scrub-Jay #18-1389
08/01/2018SacramentoSacramento95832California Scrub-Jay #18-1378
08/01/2018SacramentoSacramento95822American Crow #18-1400
08/01/2018SacramentoCarmichael95608California Scrub-Jay #18-1402
08/01/2018SacramentoSacramento95817American Crow #18-1410
08/01/2018SacramentoRancho Cordova95742House Finch #18-1416
08/01/2018SacramentoSacramento95822Northern Mockingbird #18-1422
08/01/2018SacramentoSacramento95834House Finch #18-1432
08/01/2018SacramentoSacramento95831California Scrub-Jay #18-1434
08/01/2018YoloWest Sacramento95691Northern Mockingbird #18-1435
08/01/2018SacramentoSacramento95831California Scrub-Jay #18-1436
08/01/2018SacramentoSacramento95828Hooded Oriole #18-1443
08/01/2018SacramentoSacramento95841Yellow-billed Magpie #18-1444
08/01/2018SacramentoRancho Cordova95670Yellow-billed Magpie #18-1447
08/01/2018YoloWest Sacramento95691California Scrub-Jay #18-1448
08/01/2018YoloWest Sacramento95691California Scrub-Jay #18-1449
08/01/2018SacramentoSacramento95822House Finch #18-1450
08/01/2018SacramentoCarmichael95608Yellow-billed Magpie #18-1451
08/01/2018SacramentoCitrus Heights95610California Scrub-Jay #18-1452
08/01/2018SacramentoSacramento95835American Crow #18-1457
08/01/2018SacramentoRio Linda95673California Scrub-Jay #18-1461
08/01/2018SacramentoRio Linda95673California Scrub-Jay #18-1462
08/01/2018SacramentoFreeport95832House Finch #18-1466
08/01/2018SacramentoSacramento95824House Finch #18-1477
08/01/2018SacramentoSacramento95816House Finch #18-1480
08/01/2018SacramentoSacramento95835American Crow #18-1486
08/06/2018SacramentoSacramento95822House Finch #18-1470
08/06/2018SacramentoWilton95693American Crow #18-1494
08/06/2018SacramentoElk Grove95624American Crow #18-1497
08/06/2018SacramentoOrangevale95662California Scrub-Jay #18-1498
08/06/2018SacramentoWilton95693California Scrub-Jay #18-1501
08/06/2018SacramentoSacramento95835American Crow #18-1504
08/06/2018SacramentoElk Grove95624American Crow #18-1505
08/06/2018SacramentoSacramento95819California Scrub-Jay #18-1511
08/06/2018YoloDavis95616American Crow #18-1527
08/06/2018SacramentoElverta95626California Scrub-Jay #18-1528
08/06/2018SacramentoOrangevale95662Yellow-billed Magpie #18-1539
08/06/2018SacramentoSacramento95823California Scrub-Jay #18-1544
08/06/2018SacramentoSacramento95841American Crow #18-1548
08/06/2018SacramentoElk Grove95624California Scrub-Jay #18-1551
08/06/2018SacramentoSacramento95825American Crow #18-1554
08/06/2018SacramentoSacramento95828Lesser Goldfinch #18-1556
08/06/2018SacramentoSacramento95835Northern Mockingbird #18-1567
08/06/2018SacramentoSacramento95821Oak Titmouse #18-1568
08/06/2018SacramentoElk Grove95624American Crow #18-1571
08/06/2018SacramentoSacramento95831Bushtit #18-1572
08/08/2018YoloDavis95618American Crow #18-1577
08/08/2018SacramentoSacramento95822American Robin #18-1585
08/08/2018SacramentoSacramento95835California Scrub-Jay #18-1587
08/08/2018YoloWoodland95695House Finch #18-1588
08/08/2018SacramentoSacramento95864California Scrub-Jay #18-1590
08/08/2018SacramentoCarmichael95608American Robin #18-1594
08/08/2018SacramentoSacramento95831American Crow #18-1595
08/08/2018SacramentoSacramento95624Northern Mockingbird #18-1596
08/08/2018SacramentoSacramento95818American Crow #18-1597
08/08/2018SacramentoSacramento95826California Scrub-Jay #18-1598
08/08/2018SacramentoCitrus Heights95610Northern Mockingbird #18-1599
08/08/2018YoloWoodland95776American Crow #18-1603
08/08/2018SacramentoSacramento95864California Scrub-Jay #18-1606
08/08/2018SacramentoSacramento95821American Crow #18-1608
08/08/2018SacramentoSacramento95864California Scrub-Jay #18-1612
08/08/2018SacramentoSacramento95693California Scrub-Jay #18-1614
08/08/2018SacramentoSacramento95818House Sparrow #18-1615
08/08/2018SacramentoCitrus Heights95621California Scrub-Jay #18-1620
08/08/2018SacramentoElk Grove95758American Crow #18-1621
08/08/2018SacramentoSacramento95833American Crow #18-1629
08/08/2018SacramentoSacramento95835California Scrub-Jay #18-1640
08/08/2018SacramentoSacramento95835American Crow #18-1641
08/08/2018YoloWoodland95776California Scrub-Jay #18-1652
08/08/2018SacramentoSacramento95831House Wren #18-1654
08/13/2018SacramentoSacramento95670Yellow-billed Magpie #18-1660
08/13/2018SacramentoSacramento95826House Finch #18-1662
08/13/2018SacramentoNorth Highlands95660Cooper's Hawk #18-1663
08/13/2018SacramentoFair Oaks95628California Scrub-Jay #18-1702
08/13/2018SacramentoCarmichael95608American Crow #18-1706
08/13/2018SacramentoWilton95693House FInch #18-1708
08/15/2018YoloClarksburg95612House Finch #18-1712
08/15/2018SacramentoElk Grove95624American Crow #18-1733
08/15/2018YoloDavis 95616American Crow #18-1736
08/15/2018SacramentoAntelope95843American Crow #18-1739
08/15/2018SacramentoAntelope95843Yellow-billed Magpie #18-1746
08/15/2018SacramentoSacramento95842American Crow #18-1751
08/15/2018SacramentoGalt95632California Scrub-Jay #18-1755
08/15/2018SacramentoGalt95632California Scrub-Jay #18-1756
08/15/2018SacramentoRio Linda95673California Scrub-Jay #18-1760
08/20/2018SacramentoSacramento95864American Crow #18-1772
08/20/2018SacramentoSacramento95835California Scrub-Jay #18-1779
08/20/2018YoloWest Sacramento95691Barn Owl #18-1781
08/20/2018YoloWest Sacramento95691Northern Mockingbird #18-1784
08/20/2018SacramentoFair Oaks95628House Finch #18-1785
08/20/2018SacramentoSacramento95818American Crow #18-1798
08/20/2018SacramentoRio Linda95673California Scrub-Jay #18-1803
08/20/2018SacramentoSacramento95826Northern Mockingbird #18-1804
08/20/2018SacramentoElk Grove95624Black-headed Grosbeak #18-1810
08/20/2018YoloDavis95616MacGillivry's Warbler #18-1811
08/20/2018SacramentoOrangevale95662House Finch #18-1812
08/20/2018SacramentoSacramento95833House Finch #18-1816
08/20/2018YoloWest Sacramento95691American Crow #18-1818
08/20/2018SacramentoCitrus Heights95610Bewick's Wren #18-1832
08/22/2018SacramentoFoothill Farms95842American Crow #18-1846
08/22/2018SacramentoSacramento95833Yellow-billed Magpie #18-1859
08/22/2018SacramentoRosemont95826American Crow #18-1860
08/22/2018SacramentoSacramento95821Yellow-billed Magpie #18-1863
08/22/2018SacramentoSacramento95811American Crow #18-1870
08/22/2018YoloDavis95616American Crow #18-1875
08/22/2018SacramentoElk Grove95624Hooded Oriole #18-1885
08/22/2018YoloDavis95618California Scrub-Jay #18-1889
08/22/2018SacramentoElk Grove95624American Crow #18-1895
08/27/2018SacramentoRancho Cordova95670Cooper's Hawk #18-1902
08/27/2018SacramentoCarmichael95608American Crow #18-1909
08/27/2018SacramentoWilton95693American Crow #18-1913
08/27/2018SacramentoCarmichael95608American Crow #18-1921
08/27/2018YoloDavis95616American Crow #18-1927
08/27/2018SacramentoElk Grove95624California Scrub-Jay #18-1928
08/27/2018SacramentoElk Grove95624Cooper's Hawk #18-1940
08/29/2018YoloWest Sacramento95691California Scrub-Jay #18-1943
08/29/2018yoloDavis95616American Crow #18-1951
08/29/2018SacramentoFair Oaks95628American Crow #18-1954
08/29/2018SacramentoSacramento95826California Scrub-Jay #18-1961
08/29/2018SacramentoCitrus Heights95621European Starling #18-1962
08/29/2018YoloDavis95618California Scrub-Jay #18-1984
08/29/2018YoloDavis95618California Scrub-Jay #18-1986
08/29/2018YoloDavis95616Great Horned Owl #18-2004
08/29/2018SacramentoRancho Murieta95683California Scrub-Jay #18-2005
09/04/2018SacramentoSacramento95833American Crow #18-2023
09/04/2018YoloDavis95616American Crow #18-2028
09/04/2018SacramentoWilton95693American Crow #18-2029
09/04/2018SacramentoCarmichael95608Yellow-billed Magpie #18-2043
09/04/2018YoloDavis95616American Crow #18-2051
09/06/2018YoloWest Sacramento95691California Scrub-Jay #18-2071
09/06/2018SacramentoRancho Cordova95670Cooper's Hawk #18-2072
09/06/2018YoloWoodland95776American Crow #18-2076
09/06/2018SacramentoSacramento95821Yellow-billed Magpie #18-2081
09/06/2018SacramentoSacramento95820Mourning Dove #18-2084
09/06/2018SacramentoSacramento95835Mourning Dove #18-2086
09/06/2018SacramentoFolsom95630American Crow #18-2088
09/10/2018SacramentoElk Grove95758Mourning Dove #18-2138
09/10/2018SacramentoFair Oaks95628California Scrub-Jay #18-2142
09/12/2018SacramentoSacramento95821CA Towhee #18-2170
09/17/2018YoloDavis95616American Crow #18-2189
09/17/2018YoloDavis95616American Crow #18-2193
09/17/2018SacramentoSacramento95825House Finch #18-2200
09/19/2018SacramentoSacramento95829American Crow #18-2240
09/19/2018YoloDavis95616American Crow #18-2251
09/24/2018SacramentoCitrus Heights95610American Crow #18-2274
09/24/2018SacramentoFolsom95630American Crow #18-2276
09/26/2018YoloDavis95616California Scrub-Jay #18-2308
09/26/2018SacramentoSacramento95821California Scrub-Jay #18-2324
09/26/2018SacramentoSacramento95835American Robin #18-2329
10/01/2018SacramentoSacramento95811American Crow #18-2347
10/03/2018SacramentoSacramento95823House Sparrow #18-2365
10/03/2018YoloWoodland95776American Crow #18-2372
10/11/2018SacramentoCitrus Heights95610American Crow #18-2445


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.