Saturday, August 18, 2018

PRO/AH/EDR> West Nile virus (16): Americas (USA)

WEST NILE VIRUS (16): AMERICAS (USA)
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Date: Tue 7 Aug 2018
Source: Centers for Disease Control and Prevention (CDC) [edited]
<https://www.cdc.gov/westnile/statsmaps/preliminarymapsdata2018/disease-cases-state-2018.html>


West Nile virus disease cases by state 2018

State / Neuroinvasive* / Non-neuroinvasive** / Deaths / Presumptive
viremic blood donors***
Alabama / 2 / 2 / 4 / 0 / 2
Arizona / 1 / 0 / 1 / 0 / 0
California / 7 / 6 / 13 / 0 / 3
Colorado / 1 / 0 / 1 / 0 / 0
District of Columbia / 1 / 1 / 2 / 0 / 0
Florida / 0 / 0 / 0 / 0 / 1
Georgia / 1 / 0 / 1 / 0 / 1
Illinois / 2 / 1 / 3 / 0 / 0
Indiana / 0 / 1 / 1 / 0 / 0
Iowa / 0 / 0 / 0 / 0 / 1
Kansas / 2 / 0 / 2 / 0 / 0
Louisiana / 15 / 6 / 21 / 0 / 6
Maryland / 2 / 0 / 2 / 0 / 0
Michigan / 0 / 0 / 0 / 0 / 1
Minnesota / 1 / 3 / 4 / 0 / 4
Mississippi / 9 / 4 / 13 / 0 / 1
Montana / 0 / 0 / 0/ 0 / 1
Nebraska / 2 / 2 / 4 / 0 / 2
New Mexico / 0 / 0 / 0 / 0 / 1
New York / 0 / 1 / 1 / 0 / 0
North Carolina / 1 / 0 / 1 / 1 / 0
North Dakota / 1 / 2 / 3 / 0 / 0
Ohio / 2 / 0 / 2 / 1 / 2
Oklahoma / 1 / 0 / 1 / 0 / 0
Pennsylvania / 1 / 0 / 1 / 0 / 1
South Carolina / 1 / 0 / 1 / 0 / 0
South Dakota / 1 / 12 / 13 / 1 / 9
Tennessee / 2 / 0 / 2 / 1 / 0
Texas / 5 / 2 / 7 / 0 / 8
Virginia / 1 / 1 / 2 / 0 / 0

Totals / 62 / 44 / 106 /4 / 44

*Includes confirmed and probable cases.
**Includes cases reported as meningitis, encephalitis, or acute
flaccid paralysis.
***Presumptive viremic blood donors (PVDs) are people who had no
symptoms at the time of donating blood through a blood collection
agency, but whose blood tested positive when screened for the presence
of West Nile virus. Some PVDs develop symptoms after donation.

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Communicated by:
ProMED-mail
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[The above state-by-state case count is the most recent one issued by
the CDC. The non-neuroinvasive case count is likely significantly less
than the actual number because the CDC states that 8 of 10 West Nile
virus (WNV) infections are unapparent or very mild, transient febrile
infections of individuals who do not seek medical attention. The CDC
states that about one in 150 people who are infected develop a severe
illness affecting the central nervous system, such as encephalitis
(inflammation of the brain) or meningitis (inflammation of the
membranes that surround the brain and spinal cord)
(<https://www.cdc.gov/westnile/index.html>). This site also has a map
showing WNV human cases from 2003 to present [2018].

WNV is now well established in the lower 48 states; vector mosquitoes
are relatively abundant, and human cases, as well as cases in
unvaccinated equine animals, can be expected every year. There is no
commercially available vaccine for human application, so avoidance of
mosquito bites is the only practical preventive measure available. -
Mod.TY

HealthMap/ProMED-mail map:
United States: <http://healthmap.org/promed/p/106>]

[See Also:
West Nile virus (14): Americas (USA) equine, human
http://promedmail.org/post/20180811.5957920
West Nile virus (08): Americas (USA) equine, human
http://promedmail.org/post/20180811.5957920
West Nile virus (07): Americas (USA)
http://promedmail.org/post/20180701.5883730
West Nile virus (05): Americas (Brazil) equine, OIE
http://promedmail.org/post/20180608.5845490
West Nile virus (04): Americas (Canada)
http://promedmail.org/post/20180525.5819500]
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