Alameda County Mosquito Abatement District

education

West Nile Virus Activity

2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017
Birds 23 48 30 19 13 10 1 0 15 18 97 19 11 2
Squirrels N/A 5 2 1 1 0 0 1 1 0 4 0 0 0
Chickens 0 0 0 0 0 0 0 0 N/A 0 1 N/A N/A N/A
Mosquitoes 0 9 9 2 1 1 0 0 0 0 16 16 2 0
Horses 0 2 0 0 0 0 0 0 0 0 0 0 0 0
Humans 0 1 1 0 1 0 1 0 2 0 1 0 0 0

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