Persons using assistive technology might not be able to fully access information in this file. For assistance, please send e-mail to: mmwrq@cdc.gov. Type 508 Accommodation and the title of the report in the subject line of e-mail.
West Nile Virus Activity --- United States, September 4--10, 2003
This report summarizes West Nile virus (WNV) surveillance data reported to CDC through ArboNET as of 3
a.m., Mountain Daylight Time, September 10, 2003.
During the reporting week of September 4--10, a total of 1,067 human cases of WNV infection were reported from
24 states (Colorado, Florida, Georgia, Illinois, Indiana, Iowa, Kansas, Louisiana, Maryland, Minnesota, Mississippi, Montana, Nebraska, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, South Dakota, Tennessee, Texas, Wisconsin, and Wyoming), including 17 fatal cases from seven states (Colorado, Georgia, Montana,
Nebraska, New York, South Dakota, and Texas). During the same period, WNV infections were reported in 948 dead birds, 395 horses, five dogs, one squirrel, and 600 mosquito pools.
During 2003, a total of 2,923 human cases of WNV infection have been reported from Colorado (n = 973), Nebraska (n
= 436), South Dakota (n = 407), Wyoming (n = 239), Texas (n = 190), Montana (n = 116), New Mexico (n = 95),
North Dakota (n = 91), Louisiana (n = 48), Mississippi
(n = 43), Pennsylvania (n = 38), Minnesota (n = 31),
Oklahoma (n = 25), Iowa (n = 23), Florida (n = 22), Alabama (n = 20), Ohio (n = 19), Kansas (n = 18), New York (n = 13), North Carolina (n = 10), Illinois (n = eight), Maryland (n = eight), Georgia (n = seven), Indiana (n = six), Missouri
(n = six), Tennessee (n = six), Arkansas (n = five), Wisconsin (n = five), Kentucky (n = four), Virginia (four), New Jersey
(n = three), Arizona (n = one), Connecticut (n = one),
Massachusetts (n = one), and South Carolina (n = one)
(Figure). Of 2,800 (96%) cases for which demographic data were available, 1,471 (53%) occurred among males; the
median age was 47 years (range: 1 month--99 years), and the dates of illness onset ranged from March 28 to August 29. Of the 2,800 cases, 54 fatal cases were reported from Colorado (n = 13), Nebraska (n = 10), Texas (n = six), South Dakota
(n = five), New Mexico (n = four), Wyoming (n =
four), Alabama (n = two), Iowa (n = two), New York (n = two), Georgia (n = one), Kansas (n = one), Mississippi (n = one),
Missouri
(n = one), Montana (n = one), and Ohio (n = one). A total of 240 presumptive West Nile (WN)--viremic blood donors
have been reported from Nebraska (n = 116), South Dakota (n = 48), Texas (n = 20), Wyoming (n=16), New Mexico (n = 11), Oklahoma (n = 11), Montana (n = five), Iowa (n = three), Minnesota (n = three), Mississippi (n = three), Florida
(n = one), Louisiana (n = one), New Jersey (n = one), and Tennessee (n = one). Of these 240 donors, 20 subsequently had onset of WN fever, and one subsequently had onset of WN meningoencephalitis. In addition, 6,145 dead birds with WNV infection
were reported from 40 states and New York City; 1,557 WNV infections in horses have been reported from 34 states, 10
WNV infections were reported in dogs, three infections in squirrels, and 12 infections in unidentified animal species. During 2003, WNV seroconversions have been reported in 552 sentinel chicken flocks from 12 states, and 17 seropositive sentinel horses have been reported from five states. A total of 3,774
WNV-positive mosquito pools have been reported from 36 states
and New York City.
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.
