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Subject: [WNV-L] Update: Range & Cases US & Can 2003 (4)
Date:
5 Aug 2003
Posted by:
ProMed
Excerpted from ProMED-mail postings (Id: 20030803.1900 and 20030803.1899), Sunday August 3, 2003: [1] Canada [2] CDC Summary of Activity in US [3] New Mexico: First Human WNV Case [4] Florida: First Human Cases in 2003 Detected [5] Florida Infections Detected by Blood Screening [6] Colorado: 18 Human Cases Confirmed [7] Nebraska: 2 Suspected Human Cases [8] Louisiana Equine Cases --------------------------------------------------- [1] CANADA Source: Health Canada, Thu 31 Jul 2003 http://www.hc-sc.gc.ca/pphb-dgspsp/wnv-vwn/mon_e.html Human: One confirmed case in Saskatchewan, detected in blood donation Horses: 5 confirmed equine cases; Ontario (1), Manitoba (2), Saskatchewan (1), Alberta (1). Mosquitoes: mosquito pool previously reported WNV-positive July 15 2003 (in Ontario) is now considered a false positive. As of 31 Jul, 4 mosquito pools WNV-positive; Quebec (1), Ontario (1), Manitoba (1), Alberta (1).
Wild Birds: Test Results by Province: Province No. submitted for testing No.tested No. confirmed positive Newfoundland and Labrador 30 29 0 Prince Edward Island 207 192 0 Nova Scotia 478 461 0 New Brunswick 491 467 1 Quebec 1079 998 14 Ontario 1242 1086 74 Manitoba 833 750 82 Saskatchewan 819 644 27 Alberta 707 691 8 British Columbia 1422 1395 0 Yukon 7 6 0 Northwest Territories 10 10 0 Nunavut 1 1 0
[ProMED-mail Moderator:] The totals for Canada for 2003 so far are 7329 birds submitted for testing, 6733 birds tested, and 206 confirmed WNV-positive. In addition there were 1989 sightings of dead birds recorded. This represents an increase of 952 birds tested and 73 more birds confirmed positive since the last update on Thu 24 Jul 2003. Equine cases (5) and a human case are reported fro the first time, and the number of positive mosquito pools has increased by 2. No positive WNV results have been reported yet from the peripheral provinces of Newfoundland and Labrador, Prince Edward Island, Nova Scotia, British Columbia, Yukon, Northwest Territories and Nunavut - Mod.CP/JW] [2] CDC SUMMARY OF ACTIVITY IN US, JULY 24-JULY 30 Source: Morbidity and Mortality Weekly Report, Fri 1 Aug 2003. 52(30);713-714 http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5230a7.htm During the reporting week of 24 to 30 Jul 2003, a total of 32 human cases of WNV infection were reported from 7 states (Alabama, Colorado, Florida, Louisiana, Mississippi, South Dakota, and Texas). During the same period, WNV infections were reported in 277 dead corvids (crows and related species), 70 other dead birds, 36 horses, one dog, one unidentified animal species, and 352 mosquito pools. During 2003, a total of 44 human cases of WNV infection have been reported from Texas (n = 11), Louisiana (n = 10), Alabama (n = 6), Colorado (n = 4), Florida (n = 4), South Dakota (n = 4), Iowa (n = one), Minnesota (n = one), Mississippi (n = one), Ohio (n = one), and South Carolina (n = one). Among 43 (98 percent) cases for which demographic data were available, 27 (63 percent) occurred among men; the median age was 55 years (range: 5 to 87 years), and the dates of illness onset ranged from 29 May to 19 Jul 2003. In addition, 828 dead corvids and 220 other dead birds with WNV infection were reported from 36 states; 90 WNV infections in horses have been reported from 19 states (Alabama, Arkansas, Colorado, Florida, Georgia, Kansas, Kentucky, Minnesota, Missouri, Montana, Nebraska, New Mexico, North Carolina, North Dakota, Oklahoma, South Dakota, Texas, Wisconsin, and Wyoming), one infection was reported in an unidentified species (Florida), and 2 WNV infections were reported in dogs (Florida and South Dakota). During 2003, WNV seroconversions have been reported in 86 sentinel chicken flocks from 6 states (Colorado, Florida, Iowa, Louisiana, North Carolina, and Nebraska). South Dakota and Louisiana each reported 3 seropositive sentinel horses; 679 WNV-positive mosquito pools have been reported from 18 states (Colorado, Connecticut, Georgia, Illinois, Indiana, Kansas, Louisiana, Maryland, Massachusetts, Michigan, Mississippi, Nebraska, New Jersey, South Dakota, Tennessee, Texas, Virginia, and Wisconsin). Additional information about WNV activity is available from CDC at: http://www.cdc.gov/ncidod/dvbid/westnile/surv&controlCaseCount03.htm http://www.cdc.gov/ncidod/dvbid/westnile/index.htm and http://www.cindi.usgs.gov/hazard/event/west_nile/west_nile.html http://westnilemaps.usgs.gov/ [In addition the first human case was reported from New Mexico and a suspected case in Nebraska are additional to the data included in the CDC-ArboNET report for the period 24 to 30 Jul 2003. - Mod.CP] [3] NEW MEXICO: FIRST HUMAN WNV CASE Date: Fri 1 Aug 2003 From: Ami Logan <SweetSunflower29@msn.com> Source: New Mexico channel.com, Fri 1 Aug 2003 [edited] http://www.thenewmexicochannel.com/health/2370858/detail.html A Valencia County woman is the first human case of WNV in New Mexico. The woman had not traveled outside of New Mexico, which means she was bitten by infected mosquitoes in NM. She was seen by her physician with symptoms of fever, headache, and a rash. She did not develop meningitis. In 2003, WNV has been found in a horse in Sierra Co, a horse in Chavez Co and a golden eagle in Santa Fe Co. [4] FLORIDA: FIRST HUMAN CASES IN 2003 Sources: Sun-Sentinel, Associated Press report, Fri 25 Jul 2003 http://www.sun-sentinel.com/news/local/florida/sfl-725virus,0,7750682.story?coll=sfla-news-florida and Florida Today, Associated Press report, Mon 28 Jul 2003 WNV has been detected in 2 Florida residents, marking the state's first human cases in 2003: a 76-year-old man from Collier Co [Marco Island, south of Naples on Gulf Coast] and an 85-year-old Okaloosa Co [Panhandle] woman (ann Jul 24). The 2 cases come early in the rainy season, when the freshwater mosquito that carries the virus thrives. Collier Co was placed under a medical alert, urging people (especially those older than 50 with weakened immune systems) to take extra precautions to avoid getting bitten and allowing the state to spray insecticide if necessary. On July 28, Florida health officials confirmed the first human case of WNV contracted in Brevard Co [central Atlantic coast]. [5] FLORIDA INFECTIONS DETECTED BY BLOOD SCREENING Source: Florida Today, Associated Press report, Mon 28 Jul 2003 The Central Florida Blood Bank detected WNV nucleic acid in the donated blood of a 36-year-old Rockledge man. Health officials plan to take another blood sample from the Rockledge man in a few weeks to make sure he has fully recovered from the viral infection. He was thought to have been infected by the virus while outside on the 4th of July. The man recovered from a brief illness by the time he gave blood on 15 Jul 2003 at the blood bank's Rockledge branch. The health department is also testing another WNV-positive result reported by the blood bank: A 40-year-old Stuart donor. The blood bank found the 2 men's infected samples among 15 000 donations it has tested since 30 Jun 2003, using a new machine that identifies [viral nucleic acid]. The Stuart man, who suffered no significant illness, was working outside in the Rockledge area between late May and early July; he gave blood on 6 Jul 2003. In 2002, WNV killed 2 of 28 people infected in Florida. [6] COLORADO: 18 HUMAN CASES CONFIRMED Date: Thu 31 Jul 2003 Source: Colorado Department of Health, Associated Press report, 31 Jul 2003 13 more cases of WNV have been confirmed in humans in Colorado, and many more are expected as the exotic disease takes hold, state health officials said on Wed 30 Jul 2003. The latest human cases bring the total to 18, with 10 more suspected cases. The disease has been found in humans in 12 counties on the Eastern Plains and along the Front Range. WNV first appeared in in the state in 2002, infecting 13 people. None of the Colorado cases has been fatal. Dr. Ned Calonge, the state's chief medical officer, said the number of West Nile cases will rise but other diseases, such as [influenza], affect more people, he said. Influenza kills about 800 Coloradans each year. Calonge said that the number of West Nile virus cases is expected to decline after the disease has been in the state a few years. [7] NEBRASKA: 2 SUSPECTED HUMAN CASES Date: Fri 25 Jul 2003 Source: Lincoln Journal Star, Fri 25 Jul 2003 http://www.journalstar.com/latest_reg.php?story_id=66107 A 63-year-old Fremont man has been confirmed to have contracted the virus by the Three Rivers Public Health Department. And preliminary tests show that a 19-year-old Lincoln woman could have WNV infection. Neither case has been confirmed by the state Health and Human Services System. Spokesman Bill Wiley said the system is awaiting confirmation from the Centers for Disease Control and Prevention in Atlanta. The Lincoln woman, a Nebraska Wesleyan University student, became ill last week. She reported that she had been bitten by mosquitos while on a July 4th boating trip in northern Kansas and is recovering. In 2002, there were 174 known cases in people in 48 of Nebraska's 93 counties (8 known fatalities thus far). Most of those cases were in July, August, and September. [8] LOUISIANA-EQUINE CASES Date: Thu 24 Jul 2003 Source: Office of Animal Health Services, Louisiana Dept Agriculture & Forestry, 24 Jul 2003 www.lvma.org WNV has been found in 3 horses in Caddo and Lafourche Parishes. These are the first 3 that have been confirmed positive by the laboratory. WNV is a reportable disease when 1st suspected: Vets should test the suspect horses, call, email or fax the state office to report the suspect case, and submit blood work to the laboratory. Collect the following data: Name of owner, Address of owner, City and Zip code, Name of Horse, Breed, Sex, Age, Address of Horse, location, City, Parish, Zip code, vaccination status, Any other pertinent data or comments. -- M. A. Littlefield-Chabaud, DVM, MS Assistant State Veterinarian Office of Animal Health Services Louisiana Department of Agriculture and Forestry 5825 Florida Blvd. Baton Rouge, LA 70806 PO Box 1951 Baton Rouge, LA 70821-1951 <malc@ldaf.state.la.us>
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