Persons using assistive technology might not be able to fully access information in this file. For assistance, please send e-mail to: [email protected]. Type 508 Accommodation and the title of the report in the subject line of e-mail.
Weekly Update: West Nile Virus Activity ---United States, November
14--20, 2001
The following report summarizes West Nile virus (WNV) surveillance data
reported to CDC through ArboNET and verified by states and other jurisdictions as of November
20, 2001.
During the week of November 14--20, three human cases of WNV encephalitis
or meningitis were reported from Massachusetts (two) and New Jersey (one).
During the same period, WNV infections were reported in 87 crows, 23 other birds, and
13 horses. A total of three WNV-positive mosquito pools were reported from two
states (Georgia and Ohio).
During 2001, a total of 48 human cases of WNV encephalitis or meningitis
have been reported in New York (12), Florida (10), New Jersey (seven), Connecticut
(six), Maryland (six), Pennsylvania (three), Massachusetts (two), Georgia (one),
and Louisiana (one). Among these 48 cases, 27 (56%) were in males; the median age
was 70 years (range: 36--90 years); dates of illness onset ranged from July 13 to
October 15; and five (10%) patients died. A total of 4,604 crows and 1,497 other birds with
WNV infection were reported from 27 states and the District of Columbia (Figure 1);
189 WNV infections in other animals (all horses) were reported from 15 states
(Alabama, Connecticut, Florida, Georgia, Illinois, Indiana, Kentucky, Louisiana,
Massachusetts, Mississippi, New York, North Carolina, Pennsylvania, Tennessee, and Virginia).
During
2001, 756 WNV-positive mosquito pools were reported from 15 states
(Connecticut, Florida, Georgia, Illinois, Kentucky, Maryland, Massachusetts, Michigan,
New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, and
Virginia) and the District of Columbia.
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.
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
[email protected].
