Eastern Equine Encephalitis, West Nile Virus, and Dengue fever reports from Florida; and West Nile Virus reports from California (8), Georgia, Illinois, Indiana, Louisiana, Nevada, New York, North Dakota (2), Tennessee (2), and Washington.

The following bird species have been reported to CDC's West Nile Virus avian mortality database from 1999-present. The Western Tanager above. Others below individually identified.

California 08/18/10 krcrtv.com: Butte County health officials have confirmed a Chico woman has tested positive for West Nile Virus. The elderly woman was hospitalized with the most severe form of West Nile, and officials say at this time, she is in stable condition.   This is the first confirmed human case in Butte County for 2010.   “This is an important reminder that West Nile Virus is here to stay,” said Butte County Health Officer Dr. Mark Lundberg. “We know from local surveillance efforts that West Nile Virus is circulating locally in mosquitoes and wild birds. West Nile is active in many parts of Butte County, so all residents need to protect themselves from mosquito bites. Prevention is the key to stopping the spread of the virus.”

California 08/18/10 dailybulletin.com: by Lori Consalvo – As the summer months continue, health officials are finding more and more traces of West Nile Virus throughout the area.  In July, two chickens in Fontana tested positive for the virus, according to the San Bernardino County Department of Health.   And three mosquito samples in Rancho Cucamonga and Ontario recently tested positive for the presence of the virus, according to the West Valley Mosquito and Vector Control District.  The samples were collected using traps that gather female mosquitoes looking for a place to lay eggs, according to a District news release.  “We continued detection since May – May was the first detection of West Nile Virus (this year) – and now we’re into August and we’re still seeing West Nile Virus,” said Brian Reisinger, community outreach coordinator for the district.   Reisinger said he doesn’t want to alarm the public, but it’s “something that we definitely want to alert people to.”   Two contaminated traps were from Rancho Cucamonga – one near Haven Avenue and Manzanita Drive and one near Beryl Street and Baseline Road. The third was in Ontario, near San Antonio Avenue and Sixth Street, officials said.   The recent high temperatures help accelerate a mosquito’s lifestyle, Reisinger said.   “(A mosquito) can go through life stages in 3 to 4 days because it’s so warm,” he said. “Personal protection is important.”   Human infections and reports of mosquitoes carrying the disease has increased this year throughout California.  There were 10 human cases in 2009, compared to 15 this year, according to the news release. As for mosquito samples, there were 387 in 2009 and 562 so far this year.  In the San Bernardino County area, Reisinger said, there has been one human case reported.

Red-tailed Hawk

California 08/17/10 thepress.net: The Contra Costa Mosquito and Vector Control District reported last week that the first West Nile virus-positive mosquitos and bird of the year were found in Oakley.  The group of mosquitos was collected from the vicinity of Empire Avenue and El Monte Drive, and the bird was found near West Cypress Road and O’Hara Avenue.  “It’s unusual to have our first detection of West Nile virus this late in the year,” said Dr. Steve Schutz, scientific program manager for the district. “But it was only a matter of time. West Nile virus is endemic to Contra Costa County – and California, for that matter.”

California 08/14/10 modbee.com: by Bill Lindelof – Four horses have been diagnosed with West Nile virus this year in the state – in Sacramento, San Joaquin and Madera counties.  The outbreak of the virus has prompted the state Department of Food and Agriculture to renew calls for horse owners to vaccinate their animals. The four horses that contracted the virus were either unvaccinated or incompletely vaccinated.  Signs of West Nile virus in horses include staggering, stumbling, wobbling, weakness, muscle twitching and inability to stand. Not every horse exposed to West Nile will die.  The virus is mosquito-borne and the horse is not contagious to other horses or people.  “Outbreaks of West Nile virus are still a risk for horses,” said California State Veterinarian Richard Breitmeyer in a news release. “Horse owners should contact their veterinarians as soon as possible to ensure vaccination status is current.”

Hooded Oriole

California 08/13/10 dailynews.com: Its onset delayed by cooler summer temperatures, the West Nile virus is spreading throughout the San Fernando Valley, where disease-carrying mosquitoes have been found in eight communities, officials said Friday.   Mosquitoes collected from Reseda, Panorama City and Canyon Country tested positive Friday for the virus, said Crystal Brown, a spokeswoman for the Greater Los Angeles County Vector Control District.  And recently, the disease was found in mosquitoes captured in Winnetka, Woodland Hills, Encino, Granada Hills and the Hansen Dam Recreational Area in Lake View Terrace.   In addition, dead birds found in Stevenson Ranch in March and June tested positive for the virus.   No human cases have been reported in Los Angeles County this year, according health officials, although two were reported in Kern County and one in San Bernardino County.   West Nile virus infects birds and can be transmitted by mosquito to humans. The elderly and those with weak immune systems are most at risk, and about one in 150 infected people will require hospitalization.   Victims of West Nile typically experience flu-like symptoms, although it can lead to potentially deadly complications such as encephalitis or meningitis.   Statewide, 219 dead birds and 562 mosquito samples have tested positive for West Nile virus so far this year. In L.A. County, 11 dead birds and 11 mosquito samples have been found.

California 08/13/10 go.com: A dead squirrel discovered in San Mateo is the first in San Mateo County to test positive for the West Nile virus this year, local scientists said.  The otherwise unmarked squirrel is a sign of West Nile’s increasing pervasiveness all over California in 2010, Chindi Peavey, laboratory director for the San Mateo County Mosquito and Vector Control District said.  “West Nile virus is much more prevalent this year throughout the state,” she said. “It’s not something people should panic about, but yes, we have it.”  Birds are the most common carriers of the virus, Peavey said. Human infection typically occurs from a bite from a mosquito that has previously bitten a bird.  The squirrel was found on July 28 by a lab technician on a road near a creek and tested positive for West Nile virus this week.  Mosquitoes and a bird in Oakley were found to be carriers of West Nile virus on Wednesday, officials said. Teams in Santa Clara, Sacramento, Yolo and Placer counties have all fogged their areas with mosquito deterrent to rid any threat of West Nile virus.

California Towhee

California 08/13/10 orland-press-register.com: by Lydia M. Harris – The first cases of West Nile virus have been confirmed for 2010 in Glenn County, authorities reported.  Two birds — a magpie and a crow — were tested at the Glenn County Mosquito and Vector office in Willows, then a state lab in Davis confirmed the birds were infected with the deadly virus, county Mosquito and Vector Manager Jack Cavier said in a statement.  The results were confirmed Wednesday, he said.

California 08/13/10 record-bee.com: The Lake County Vector Control District and Lake County Health Services received confirmation Friday that a mosquito sample collected in Lake County tested positive for West Nile virus. The sample was collected Tuesday near the community of Upper Lake.

Great Blue Heron

Florida 08/18/10 foxnews.com: Four Florida residents have died from a mosquito-borne disease that normally afflicts horses, health officials reported on Tuesday as the swampy state enters peak season for mosquito-borne illnesses.  Health officials said last month that two Tampa-area residents had died from eastern equine encephalitis, a viral disease that inflames the brain.  Two additional deaths from the disease known as EEE have since been confirmed, one in the state capital of Tallahassee and one in the northwest Florida town of Sopchoppy.  The disease mostly affects unvaccinated horses but a handful of human deaths are recorded each year, according to the Centers for Disease Control and Prevention. There is no human vaccine for the disease, which kills a third of its human victims and often leaves survivors with significant brain damage.  The Florida Department of Health is also tracking two other less deadly mosquito-borne diseases, West Nile virus and dengue fever.  EEE and West Nile virus have been detected in 43 of Florida’s 67 counties, while dengue cases have been confirmed in two south Florida counties, Monroe and Broward, according to the state Department of Health.  The dengue virus began showing up in Florida in 2009 after an absence since its last major outbreak in 1934. At least 28 confirmed cases of domestically transmitted dengue fever have been reported in Florida this year, along with 67 foreign-acquired cases. The disease is more prevalent in Central and South America.

Georgia 08/15/10 cbsatlanta.com: by Mike Paluska  – Atlanta  — So far, no human cases of West Nile virus have been reported in Fulton County, but the Fulton County Environmental Health Services team has investigated and responded to 97 mosquito related complaints and said so far, seven pools have tested positive for West Nile virus.  A mosquito “pool” refers to a collection of mosquitoes from a particular area that is tested for the virus. Locations that tested positive include:

• Greensferry Combined Sewer Overflow (175 Stafford Street) – 2 positives • North Avenue Combined Sewer Overflow (Maddox Park) – 1 positive • Frankie Allen Park (425 Pharr Road) – 2 positives • 1388 West Avenue – 1 positive • Springvale Park (Euclid and Waverly) – 1 positive • Total Positive Mosquito Pools -7.  “We have been very successful in the past couple of summers of not having any West Nile virus cases here in Fulton County,” Dr. Matthew McKenna, with the health department said. “We want to make sure no humans contract the virus.” According to the Centers for Disease Control and Prevention, the state of Georgia had 4 cases of West Nile in 2009, two of which were fatal.

Orchard Oriole

Illinois 08/12/10 go.com: Health officials in the Chicago area are finding more evidence of West Nile virus in mosquitoes and birds.  The Cook County Department of Public Health says 49 mosquito pools and eight birds in suburban Cook County have tested positive for the virus. In Kane County, health officials say a second mosquito pool has tested positive. That sample was collected in the South Elgin area. No human cases of West Nile disease have been reported in Illinois so far this year.

Indiana 08/12/10 indystar.com: by Richard Gootee – Marion County health officials have confirmed mosquitoes carrying West Nile have been found in eight of the city’s nine townships.  “We assume at this point in the mosquito season that there are mosquitoes carrying the West Nile Virus throughout the county,” said Marion County Health Department spokesman John Althardt.  Only Decatur Township has been spared so far.  Statewide, officials say the mosquitoes in 14 counties have tested positive for the West Nile virus within the last month. This list also includes Hamilton and Hendricks County.  No human cases have been reported in the state.  In addition to the three local counties, officials found West Nile in mosquitoes in Adams, Allen, Clinton, Delaware, Grant, Howard, Kosciusko, Lake, Madison, Montgomery and Wabash counties.

American White Pelican

Louisiana 08/13/10 ksla.com:  The Louisiana Department of Health and Hospitals has confirmed three new cases of the West Nile Virus.  According to DHH, the latest cases bring the year’s total to nine. Reportedly, the three new cases come from East Baton Rouge and Ascension parishes.  Health officials characterize West Nile infections three ways: neuroinvasive, West Nile fever and asymptomatic.  So far this year, according to DHH, Louisiana has recorded three cases of the more serious neuroinvasive disease, which officials say is the more severe case and typically results in a swelling of the brain or spinal cord.

Nevada 08/18/10 recordcourier.com: by Kurt Hildebrand – Three mosquitoes bearing the West Nile virus have been trapped in Carson Valley prompting another round of aerial spraying.  Mosquito Abatement District Manager Krista Jenkins said the tests came back positive this week.  The district traps mosquitoes weekly to test them for West Nile virus. Jenkins said there is a two-week turnaround for results.  One of the mosquitoes was found at Buckeye and East Valley Road and the other two were at the corner of Highway 395 and Johnson Lane.

Northern Mockingbird

New York 08/14/10 midhudsonnews.com: The first mosquito batch this year to test positive for West Nile virus in Westchester County has been identified in Mount Vernon.  So far this year, there are no reported human cases of the virus in Westchester.  Last year there were six positive batches found in Westchester and no human cases reported.

North Dakota 08/18/10 kfyr.com: Bismark – The state health department has confirmed a fourth human case of West Nile Virus in North Dakota.  Officials say the Burleigh County woman was hospitalized.  It is the second human case in Burleigh County this year.  There also have been human cases in Ward County and Bottineau County, and a case in a Burleigh County dog.

North Dakota 08/11/10 clipsyndicate.com: A third case of West Nile virus has been confirmed in North Dakota. A Ward County woman’s case was reported today by the State Health Department. It’s the second case found in Ward County – the other was in Burleigh County. None of the three people had to be hospitalized. West Nile can cause serious illness and even death and is spread by mosquitoes.

Wild Turkey

Tennessee 08/18/10 chattanooga.com: A pool of mosquitoes in Hamilton County has tested positive for West Nile Virus (WNV), according to on-going mosquito surveillance conducted by the Chattanooga-Hamilton County Health Department. This is evidence that West Nile Virus is present in the community. The Health Department reminds everyone to protect themselves against mosquito bites and to remove potential mosquito habitats from their property. Mosquito season will continue through late October.   “Although we have had no reported human cases of West Nile Virus in Hamilton County, it’s more important than ever that people take steps to protect themselves,” said Bonnie Deakins, director of Environmental Health Services at the Health Department.  The WNV positive mosquito pool came from Sector 5 which includes zip codes 37302, 37315, 37353 37363 (south of Interstate 75), 37412, 37421. Since the Health Department has confirmed the presence of West Nile Virus in sector 5, the Health Department will no longer be accepting birds from Sector 5 for WNV testing.

Tennessee 08/15/10 wbir.com: The Knox County Health Department will spray for mosquitoes in the Cedar Bluff area Sunday night, after finding mosquitoes carrying the West Nile Virus.  That’s the first discovery of the virus in Knox County this year. No human cases have been reported.

Washington 08/18/10 kapptv.com: by Kevin Uretsky – Mosquitoes trapped by the Yakima County Mosquito Control District last week have tested positive for the West Nile virus. The mosquitoes were captured in Union Gap. These are the first positive tests in the Yakima County district this year.


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