Minnesota Department of Health (MDH) Bug Bytes
September 11, 2002
Vol. 3: No. 11
1. West Nile Update - Eight Human Cases
Since the last Bug Bytes issue, we have had 8 reported probable human cases of West Nile Virus (WNV). These include 4 hospitalized case-patients: a 35 year-old Hennepin County male with symptom onset 8/17, a 29 year-old Carver County male with symptom onset 8/23 including aseptic meningitis, a 73 year-old Polk County female with symptom onset 8/25 including mild encephalitis, a 43 year-old Morrison County female with symptom onset 8/28 including aseptic meningitis; and 4 patients not hospitalized including a 48 year-old Roseau County female with symptom onset 8/7, a 55 year-old Hennepin County male with symptom onset 8/15, a 72 year-old Rock County female with symptom onset 8/22, and a 32 year-old Anoka County male with symptom onset 8/25. Symptoms have included fever, headache, and chills. All case-patients have recovered or are recovering.
To date, WNV has been confirmed in 264 birds from 60 counties
and 356 horses from 69 counties representing every region
of Minnesota. We have stopped testing birds from counties
that have had positive birds. Our website (at http://www.health.state.mn.us/divs/
idepc/diseases/westnile/) contains information on WNV including updated maps displaying county location of positive birds, horses, and humans.
The risk of WNV is dropping rapidly as cooler weather is arriving and mosquito activity is dropping. Additional horse and human cases may be reported as specimen testing is completed.
2. LaCrosse Encephalitis Update
To date, this summer, we have recorded 8 cases of LaCrosse encephalitis. These cases include children ages 3, 4, 5, 6, 9, 11, 11, and 13 from Hennepin (2 cases), Dodge, Goodhue, Wabasha, Le Sueur, Dakota, and Scott counties. Symptom onsets ranged from 7/20 to 8/31, and all of the children were hospitalized.
3. National Food Safety
September is National Food Safety Education month. So cook, clean, chill, and separate, and check it out at http://www.cdc.gov/foodsafety/nfsem.htm.
4. Emerging Infections Conference
Once again we are co-sponsoring the "8th Annual Emerging Infections in Clinical Practice and Emerging Health Threats Conference". The conference will be on Friday November 15 in Minneapolis. We will have some great speakers including Dr. Philip Tarr, University of Washington School of Medicine, speaking on the medical management of diarrhea and E. coli O157:H7; Dr. Cynthia Whitney, CDC, on treatment and prevention of pneumococcal disease; Dr. Scott Fridkin, CDC, on the emergence of vancomycin-resistant S. aureus, Dr. Marci Layton, New York City Assistant Commissioner of Health speaking on the medical and public health response to terrorism; Dr. Ruth Lynfield, MDH, and Dr. David Williams, Hennepin County Medical Center, on local efforts to promote judicious antibiotic use; Dr. Michael Osterholm, University of Minnesota, on the national perspective of bioterrorism; and a local panel of experts discussing emergency preparedness response. Registration is available now through University of Minnesota Continuing Medical Education. Call 612 626-7600 or 1-800-776-8636 or access the conference brochure and registrations materials at http://www.med.umn.edu/cme/brochures2002/
Bug Bytes is a combined effort of the Infectious Disease Epidemiology, Prevention and Control Division and the Public Health Laboratory Division of MDH. We provide Bug Bytes as a way to say THANK YOU to the infection control professionals, laboratorians, local public health professionals, and health care providers who assist us.
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