Provisional data shows that the ages of the 2005 cases range from one to 89 years old. Of the cases investigated, 13 percent have had WNV neuroinvasive disease, 86 percent have had WNV fever and 1 percent had acute flaccid paralysis. Two cases of pregnancy-associated�West Nile�illness have also been reported. Ninety-five percent of cases are white, four percent are American Indian and one percent other races.�
Total�South Dakota�detections to date include:
? Human disease (231 cases, including 47 suspects and one death) ���Brown (41), Davison (32), Minnehaha (14), Charles Mix (11), Beadle (eight), seven cases in Butte and Pennington counties each; five cases in Brookings, Hughes, Marshall and Spink each; four cases in Codington, Hanson, Lincoln, McCook, Roberts, Stanley and Turner each; three cases in Clay, Edmunds, Grant, Hutchinson, Perkins and Union each; two cases in Aurora, Bon Homme, Brule, Campbell, Day, Douglas, Hamlin, Hand, Jerauld, Kingsbury, Lake, Lawrence, Moody, Tripp and Yankton each; and one case each in Bennett, Buffalo, Corson, Custer, Deuel, Dewey, Fall River, Jackson, McPherson, Meade, Mellette, Sanborn, Shannon, Todd and Walworth counties.�
? Positive blood donors (15 donors) � Minnehaha (three), Roberts (three) and one each in Brule,�Butte, Clay, Codington, Hamlin, Hand, Hughes, Moody and Turner counties.
? Positive mosquito pools (90) � Beadle (38), Pennington (21), Minnehaha (13), Brookings (nine), Hughes (three), Meade (three), Brown (two) and�Lincoln�(one) counties.
? Positive birds (15) � Codington (three), Davison (three), Gregory (two), Roberts (two), Deuel, Douglas, Lyman, Miner and Moody counties.
? Positive horses (three) � Clark,�Fall River�and Spink counties.
The department recommends the following precautions to prevent mosquito bites and reduce the risk of WNV:
? Use mosquito repellents containing DEET or picaridin.
? Wear shoes, socks, long pants and a long-sleeved shirt to limit mosquito exposure.
? Limit time outdoors at dusk and dawn when mosquitoes are most active.
? Eliminate standing water that gives mosquitoes a place to breed.
? Support local mosquito control efforts.
Personal precautions are particularly important for the elderly, pregnant women, and transplant patients. People with a severe or unusual headache should see their physician.
For more information about�West Nile�visit the Department of Health Web site at�http://WestNile.sd.gov�or call 1-800-592-1861. Information is also available from the�SDSU Cooperative Extension Service at�http:/ /sdces.sdstate.edu/westnile/�and the South Dakota AnimalIndustry Board at�www.state