Re: CA - West Nile Virus cases 2010 - 38 human cases
Re: CA - West Nile Virus cases 2010 - 38 human cases
human cases
YTD: 45 Counties: 11
There were 7 new WNV positive human cases reported in California last week from the following counties: Fresno (5), and Placer (2). There has been 1 human fatality in 2010 from Fresno. 45 human cases from 11 counties have tested positive for WNV in 2010.
horses
YTD: 14 Counties: 9
There was 1 new WNV positive horse reported in California last week from Solano County. This is the first indication of WNV from Solano County this year. 14 horses from 9 counties have tested positive for WNV in 2010.
dead birds
YTD: 333 Counties: 25
There were 23 new WNV positive dead birds reported in California last week from the following counties: Alameda (1), Butte (2), Los Angeles (2), Madera (2), Merced (1), Orange (6), Sacramento (3), Stanislaus (3), Tulare (1), and Yolo (2). This is the first indication of WNV from Alameda County this year. [More info]
333 dead birds from 25 counties have tested positive for WNV in 2010.
mosquito samples
YTD: 1,159 Counties: 23
There were 61 new WNV positive mosquito samples reported in California last week from the following counties: Contra Costa (2), Fresno (3), Kern (12), Kings (4), Los Angeles (5), Riverside (1), Sacramento (6), San Bernardino (4), San Joaquin (2), Stanislaus (16), Sutter (3), Tulare (1), and Yolo (2). 1,159 mosquito samples from 23 counties have tested positive for WNV in 2010.
sentinel chickens
YTD: 190 Counties: 19
There were 42 new WNV positive sentinel chickens reported in California last week from the following counties: Contra Costa (2), Kern (18), Madera (4), Merced (4), Placer (1), Riverside (4), San Bernardino (2), Solano (1), and Tulare (6). These are the first WNV positive sentinel chickens from Contra Costa and Merced counties this year. This is the first indication of WNV from Solano County this year.
190 sentinel chickens from 19 counties have tested positive for WNV in 2010.
squirrels
YTD: 14 Counties: 7
There was 1 new WNV positive squirrel reported in California last week from San Mateo County. 14 squirrels from 7 counties have tested positive for WNV in 2010.
National Activity
As of September 14, 2010, 381 human cases of WNV had been reported nationwide in 30 states: Alabama (3), Arizona (82), Arkansas (3), California (38), Colorado (37), Connecticut (7), Florida (3), Georgia (6), Illinois (1), Indiana (3), Iowa (2), Kansas (5), Louisiana (12), Maryland (6), Massachusetts (3), Michigan (10), Minnesota (3), Mississippi (5), Missouri (3), Nebraska (19), New Jersey (7), New Mexico (6), New York (62), North Dakota (7), Ohio (2), Pennsylvania (1), South Dakota (17), Texas (24), Wisconsin (1), and Wyoming (3). Of the 381 cases, 217 (57%) had neuroinvasive disease. A total of 12 WNV-related fatalities have been reported in Arizona (6), Florida (1), Nebraska (1), New York (2), and Texas (2).
http://www.westnile.ca.gov/
CDPH REPORTS FIRST HUMAN WEST NILE VIRUS FATALITY OF 2010
Sep 16, 2010
SACRAMENTO - Dr. Mark Horton, director of the California Department of Public Health announced today that West Nile virus (WNV) has claimed the life of an elderly woman in Fresno County. She is the first death this year in California from complications associated with the virus.
"This unfortunate death reminds us that we must take precautions to protect ourselves and our families from mosquito bites," Horton said. "The risk of WNV transmission continues well into the fall. We should all be taking all appropriate steps to avoid mosquito bites."
WNV is transmitted to humans and animals through a mosquito bite. Mosquitoes become infected when they feed on infected birds. Despite this fatality, the number of reported WNV illnesses in California is lower than last year. In 2009, for the same period this year, there were 47 human cases. This year 45 people in 11 California counties have been diagnosed with WNV.
Most individuals who are infected with WNV will not experience any illness. However, individuals 50 years of age and older have a higher chance of getting sick and are more likely to develop serious symptoms when infected with WNV. Recent data also indicate that those with diabetes and/or hypertension are at greatest risk for serious illness.
Horton said that the most effective ways for individuals to prevent exposure to mosquito bites and WNV are to remember the ?Four D?s?:
DEET ? Apply inspect repellent containing DEET, picaradin, oil of lemon eucalyptus or IR3535 according to label instructions. Repellents keep the mosquitoes from biting you. DEET can be used safely on infants and children 2 months of age and older.
DRESS ? Wear clothing that reduces the risk of skin exposure.
DAWN AND DUSK ? Mosquitoes that carry WNV bite in the early morning and evening so it is important to wear repellent at this time. Make sure that your doors and windows have tight-fitting screens to keep out mosquitoes. Repair or replace screens with tears or holes.
DRAIN ? Mosquitoes lay their eggs on standing water. Eliminate all sources of standing water on your property, including flower pots, old car tires, rain gutters and pet bowls. If you have a pond, use mosquito fish (available from your local mosquito and vector control agency) or commercially available products to eliminate mosquito larvae.
California?s WNV Web site (
http://westnile.ca.gov/) includes the latest information on WNV activity in the state. Californians are encouraged to report all dead birds and dead tree squirrels on the Web site or by calling toll-free 1-877-WNV-BIRD (968-2473).
http://www.westnile.ca.gov/news.php?id=106
