Skip directly to site content Skip directly to search

Español | Other Languages

Centers for Disease Control and Prevention. CDC twenty four seven. Saving Lives, Protecting People

West Nile Virus

Final Annual Maps & Data for 1999-2021

Related Pages

Tables: West Nile Virus Disease Cases by State

1999 [PDF – 1 page]
2000 [PDF – 1 page]
2001 [PDF – 1 page]
2002 [PDF – 1 page]
2003 [PDF – 1 page]
2004 [PDF – 1 page]
2005 [PDF – 1 page]
2006 [PDF – 1 page]
2007 [PDF – 1 page]
2008 [PDF – 1 page]
2009 [PDF – 1 page]
2010 [PDF – 1 page]
2011 [PDF – 1 page]
2012 [PDF – 1 page]
2013 [PDF – 1 page]
2014 [PDF – 1 page]
2015 [PDF – 1 page]
2016 [PDF – 1 page]
2017 [PDF – 1 page]
2018 [PDF – 1 page]
2019 [PDF – 1 page]
2020 [PDF – 1 page]
2021 [PDF – 1 page]

Maps: West Nile Virus Neuroinvasive Disease Incidence by State

1999 [PDF – 1 page]
2000 [PDF – 1 page]
2001 [PDF – 1 page]
2002 [PDF – 1 page]
2003 [PDF – 1 page]
2004 [PDF – 1 page]
2005 [PDF – 1 page]
2006 [PDF – 1 page]
2007 [PDF – 1 page]
2008 [PDF – 1 page]
2009 [PDF – 1 page]
2010 [PDF – 1 page]
2011 [PDF – 1 page]
2012 [PDF – 1 page]
2013 [PDF – 1 page]
2014 [PDF – 1 page]
2015 [PDF – 1 page]
2016 [PDF – 1 page]
2017 [PDF – 1 page]
2018 [PDF – 1 page]
2019 [PDF – 1 page]
2020 [PDF – 1 page]
2021 [PDF – 1 page]

Maps: West Nile Virus Neuroinvasive Disease Incidence by County

1999 [PDF – 1 page]
2000 [PDF – 1 page]
2001 [PDF – 1 page]
2002 [PDF – 1 page]
2003 [PDF – 1 page]
2004 [PDF – 1 page]
2005 [PDF – 1 page]
2006 [PDF – 1 page]
2007 [PDF – 1 page]
2008 [PDF – 1 page]
2009 [PDF – 1 page]
2010 [PDF – 1 page]
2011 [PDF – 1 page]
2012 [PDF – 1 page]
2013 [PDF – 1 page]
2014 [PDF – 1 page]
2015 [PDF – 1 page]
2016 [PDF – 1 page]
2017 [PDF – 1 page]
2018 [PDF – 1 page]
2019 [PDF – 1 page]
2020 [PDF – 1 page]
2021 [PDF – 1 page]

Last Reviewed: January 11, 2023

Source: Centers for Disease Control and Prevention, National Center for Emerging and Zoonotic Infectious Diseases (NCEZID), Division of Vector-Borne Diseases (DVBD)

Facebook
Twitter
LinkedIn
Syndicate

homeWest Nile Virus Home

Prevention
Symptoms, Diagnosis, & Treatment
Transmissionplus icon
- Blood Transfusion and Organ Donation
- Mother to Baby during Pregnancy, Delivery, or Breast Feeding
Statistics & Mapsplus icon
- Preliminary Maps & Data for 2022plus icon
- Final Maps & Data for 1999–2021plus icon
  - Cumulative Maps & Data
  - Annual Maps & Data
West Nile Virus & Dead Birds
Mosquito Controlplus icon
- Aerial Spraying
For Healthcare Providersplus icon
Resourcesplus icon

About CDC
Contact Us
800-232-4636

Facebook Twitter Instagram LinkedIn Youtube Pinterest Snapchat

CONTACT CDC

Contact Us

Call 800-232-4636

Email Us

ABOUT CDC

About CDC
Jobs
Funding

POLICIES

Accessibility
External Links
Privacy
Policies
No Fear Act
FOIA
OIG
Nondiscrimination
Vulnerability Disclosure Policy

CONNECT WITH US

LANGUAGES

Español
繁體中文
Tiếng Việt
한국어
Tagalog
Русский
العربية
Kreyòl Ayisyen
Français
Polski
Português
Italiano
Deutsch
日本語
فارسی
English

U.S. Department of Health & Human Services
Accessibility
External Links
Privacy
Policies
No Fear Act
FOIA
Nondiscrimination
OIG
Vulnerability Disclosure Policy
USA.gov

Exit Notification / Disclaimer Policy

Links with this icon indicate that you are leaving the CDC website.

The Centers for Disease Control and Prevention (CDC) cannot attest to the accuracy of a non-federal website.
Linking to a non-federal website does not constitute an endorsement by CDC or any of its employees of the sponsors or the information and products presented on the website.
You will be subject to the destination website's privacy policy when you follow the link.
CDC is not responsible for Section 508 compliance (accessibility) on other federal or private website.

For more information on CDC's web notification policies, see Website Disclaimers.

CDC.gov Privacy Settings

We take your privacy seriously. You can review and change the way we collect information below.

Performance Cookies Checkbox

These cookies allow us to count visits and traffic sources so we can measure and improve the performance of our site. They help us to know which pages are the most and least popular and see how visitors move around the site. All information these cookies collect is aggregated and therefore anonymous. If you do not allow these cookies we will not know when you have visited our site, and will not be able to monitor its performance.

Functional Cookies Checkbox

Cookies used to make website functionality more relevant to you. These cookies perform functions like remembering presentation options or choices and, in some cases, delivery of web content that based on self-identified area of interests.

Campaign Cookies Checkbox

Cookies used to track the effectiveness of CDC public health campaigns through clickthrough data.

Social Media Cookies Checkbox

Cookies used to enable you to share pages and content that you find interesting on CDC.gov through third party social networking and other websites. These cookies may also be used for advertising purposes by these third parties.

Remove all

Confirmed!

Thank you for taking the time to confirm your preferences. If you need to go back and make any changes, you can always do so by going to our Privacy Policy page.

Close