Skip Navigation LinksSkip Navigation Links
Centers for Disease Control and Prevention
Safer Healthier People
Blue White
Blue White
bottom curve
CDC Home Search Health Topics A-Z spacer spacer
spacer
Blue curve MMWR spacer
spacer
spacer

The content, links, and pdfs are no longer maintained and might be outdated.

  • The content on this page is being archived for historic and reference purposes only.
  • For current, updated information see the MMWR website.

West Nile Virus Activity --- United States, 2005

This report summarizes West Nile virus (WNV) surveillance data reported to CDC through ArboNET as of 3 a.m. Mountain Daylight Time, August 9, 2005.

Twenty-two states (Arizona, Arkansas, California, Colorado, Florida, Georgia, Illinois, Indiana, Kansas, Louisiana, Minnesota, Mississippi, Missouri, Nevada, New Mexico, New York, North Carolina, North Dakota, Ohio, Pennsylvania, South Dakota, and Texas) have reported 187 cases of human WNV illness in 2005 (Figure and Table). Ninety-eight (57%) of the 171 cases for which such data were available occurred in males; the median age of patients was 47 years (range: 4--85 years). Date of illness onset ranged from May 14 to August 4; three cases were fatal.

Fifty-four presumptive West Nile viremic blood donors (PVDs) have been reported to ArboNET during 2005. Of these, 25 were reported from California, 18 from Texas, five from South Dakota, three from Arizona, and one each from Iowa, Louisiana, and Mississippi. Of the 54 PVDs, 11 persons (median age: 50 years [range: 17--77 years]) subsequently had West Nile fever.

In addition, 1,162 dead corvids and 248 other dead birds with WNV infection have been reported from 32 states. WNV infections have been reported in horses from 21 states (Alabama, Arizona, California, Colorado, Idaho, Illinois, Kansas, Kentucky, Minnesota, Mississippi, Missouri, Nebraska, Nevada, New Mexico, North Dakota, Ohio, Oklahoma, South Dakota, Texas, Vermont, and Wyoming), one dog from Nebraska, and one squirrel from Arizona. WNV seroconversions have been reported in 126 sentinel chicken flocks from nine states (Arizona, Arkansas, California, Florida, Iowa, Louisiana, North Dakota, New Mexico, and Utah). One seropositive sentinel horse was reported from Minnesota. A total of 2,493 WNV-positive mosquito pools have been reported from 27 states (Alabama, Arizona, Arkansas, California, Colorado, Connecticut, Georgia, Idaho, Illinois, Indiana, Kansas, Louisiana, Massachusetts, Michigan, Minnesota, Missouri, Nebraska, Nevada, New Jersey, New Mexico, Ohio, Pennsylvania, South Dakota, Tennessee, Texas, Utah, and Virginia).

Additional information about national WNV activity is available from CDC at http://www.cdc.gov/ncidod/dvbid/westnile/index.htm and at http://westnilemaps.usgs.gov.

Figure

Figure
Return to top.
Table

Table
Return to top.

Use of trade names and commercial sources is for identification only and does not imply endorsement by the U.S. Department of Health and Human Services.


References to non-CDC sites on the Internet are provided as a service to MMWR readers and do not constitute or imply endorsement of these organizations or their programs by CDC or the U.S. Department of Health and Human Services. CDC is not responsible for the content of pages found at these sites. URL addresses listed in MMWR were current as of the date of publication.

Disclaimer   All MMWR HTML versions of articles are electronic conversions from ASCII text into HTML. This conversion may have resulted in character translation or format errors in the HTML version. Users should not rely on this HTML document, but are referred to the electronic PDF version and/or the original MMWR paper copy for the official text, figures, and tables. An original paper copy of this issue can be obtained from the Superintendent of Documents, U.S. Government Printing Office (GPO), Washington, DC 20402-9371; telephone: (202) 512-1800. Contact GPO for current prices.

**Questions or messages regarding errors in formatting should be addressed to mmwrq@cdc.gov.

Date last reviewed: 8/11/2005

HOME  |  ABOUT MMWR  |  MMWR SEARCH  |  DOWNLOADS  |  RSSCONTACT
POLICY  |  DISCLAIMER  |  ACCESSIBILITY

Safer, Healthier People

Morbidity and Mortality Weekly Report
Centers for Disease Control and Prevention
1600 Clifton Rd, MailStop E-90, Atlanta, GA 30333, U.S.A

USA.GovDHHS

Department of Health
and Human Services