West Nile Virus mapDetection of West Nile virus (WNV) in bird and mosquito populations helps health officials predict and prevent human and domestic animal infections. These data are critical in establishing early trends and allowing reasonable response times for prevention and control activities that will reduce the threat of mosquito-transmitted disease.

The Missouri Department of Health and Senior Services (DHSS) has built a West Nile virus surveillance system that includes mosquito trapping, testing dead birds for infection, and assessing human case activity. These data are updated weekly from April through October.

Missouri Mosquito-borne Disease Positive Test Results

2018

Human

Horses

Dead Birds

Mosquitoes

2017

Human

Horses

Dead Birds

Mosquitoes

2016

Human

Horses

Dead Birds

Mosquitoes

2015

Human

Horses

Dead Birds

Mosquitoes

2014

Human

Horses

Dead Birds

Mosquitoes

2013

Human

Horses

Dead Birds

Mosquitoes

2012

Human

Horses

Dead Birds

Mosquitoes

2011

Human

Horses

Dead Birds

Mosquitoes

2010

Human

Horses

Dead Birds

Mosquitoes

2009

Human

Horses

Dead Birds

Mosquitoes

2008

Human

Horses

Dead Birds

Mosquitoes

2007

Human

Horses

Dead Birds

Mosquitoes

2006

Human

Horses

Dead Birds

Mosquitoes

2005

Human

Horses

Dead Birds

Mosquitoes

2004

Human

Horses

Dead Birds

Mosquitoes

Live Birds

2003

Human

Horses

Dead Birds

Mosquitoes

Live Birds

2002