Skip directly to search Skip directly to A to Z list Skip directly to site content
CDC Home

West Nile Virus Activity --- United States, July 14--20, 2004

During the week of July 14--20, a total of 74 cases of human West Nile virus (WNV) illness were reported from seven states (Arizona, California, Florida, New Mexico, New York, South Dakota, and Texas).

During 2004, a total of 12 states have reported a total of 182 cases of human WNV illness to CDC through ArboNET (Table, Figure). Of these, 125 (69%) were reported from Arizona. A total of 94 (54%) of the 182 cases occurred in males; the median age of patients was 51 years (range: 1--84 years); the dates of illness onset ranged from April 23 to July 14; and four cases were fatal.

A total of 23 presumptive West Nile viremic blood donors (PVDs) have been reported to ArboNET in 2004. Of these, 21 (91%) were reported from Arizona, and one each was reported from Iowa and New Mexico. Of the 23 PVDs, two persons aged 66 and 69 years subsequently had neuroinvasive illness, and five persons (median age: 52 years [range: 22--63 years]) subsequently had West Nile fever.

In addition, during 2004, a total of 1,264 dead corvids and 130 other dead birds with WNV infection have been reported from 31 states, and 39 WNV infections in horses have been reported from 10 states (Alabama, Arizona, California, Idaho, Missouri, North Carolina, Oklahoma, South Dakota, Tennessee, and Texas). WNV seroconversions have been reported in 173 sentinel chicken flocks from four states (Arizona, California, Florida, and Louisiana) and in a wild hatchling bird from Ohio. Three seropositive sentinel horses were reported from Puerto Rico. A total of 591 WNV-positive mosquito pools have been reported from 16 states (Arizona, Arkansas, California, Georgia, Illinois, Indiana, Louisiana, Michigan, Missouri, New Jersey, New Mexico, Ohio, Pennsylvania, Tennessee, Texas, 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.

Table

Table 1
Return to top.

Figure

Figure 1

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.


All MMWR HTML versions of articles are electronic conversions from typeset documents. This conversion might result in character translation or format errors in the HTML version. Users are referred to the electronic PDF version (http://www.cdc.gov/mmwr) and/or the original MMWR paper copy for printable versions of 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.

 
USA.gov: The U.S. Government's Official Web PortalDepartment of Health and Human Services
Centers for Disease Control and Prevention   1600 Clifton Rd. Atlanta, GA 30333, USA
800-CDC-INFO (800-232-4636) TTY: (888) 232-6348 - Contact CDC–INFO
A-Z Index
  1. A
  2. B
  3. C
  4. D
  5. E
  6. F
  7. G
  8. H
  9. I
  10. J
  11. K
  12. L
  13. M
  14. N
  15. O
  16. P
  17. Q
  18. R
  19. S
  20. T
  21. U
  22. V
  23. W
  24. X
  25. Y
  26. Z
  27. #