Visitors at California’s Riley Wilderness Park report MOUNTAIN LION sightings ~ New Jersey HORSE with EASTERN EQUINE ENCEPHALITIS euthanized ~ Texas coastal waters closed to most SHELLFISH harvesting due to RED TIDE ~ WEST NILE VIRUS reports from California (2), & Florida ~ and a RABIES report from Massachusetts ~ CDC Reports: ZOONOTIC DISEASE summary for week ending October 15, 2011.

Mountain Lion. Courtesy National Park Service.

California 10/26/11 Trabuco Canyon, Orange County: Two mountain lion sightings reported at Thomas R. Riley Wilderness Park not far from Wagon Wheel Elementary School. See

New Jersey 10/27/11 Gloucester County: A horse that contracted Eastern Equine Encephalitis has been euthanized. Viral diseases affecting horses’ neurological systems must be reported to the state veterinarian at 609-292-3965 within 48 hours of diagnosis. See

Texas 10/26/11 News Release – The Texas Department of State Health Services announced today that oyster harvesting in all Texas coastal waters is closed due to red tide, an algal bloom of Karenia brevis. Red tide has been detected along the Texas coastline from Brownsville to Galveston. As a result, all Texas coastal waters are closed to the commercial and recreational harvesting of oysters, clams and mussels until further notice. Normally, the public can harvest oysters from Nov. 1 through April 30. The algae contain a toxin that can accumulate in the tissue of oysters, clams, mussels and whelks and cause neurotoxic shellfish poisoning, or NSP, in humans who consume them. NSP symptoms can include nausea, dizziness, dilated pupils and tingling sensations in the extremities.

DSHS is advising people not to harvest and eat oysters, clams, or mussels from Texas coastal waters. Oysters can be toxic without any indication of red tide such as discolored waters, respiratory irritation or dead fish. People are also advised not to harvest and eat whelks from Texas waters as these species also accumulate toxin from the red tide organism. The warning does not apply to other types of seafood such as shrimp, finfish, crabs or to commercial seafood products from other states or countries. Oysters in the market place that were harvested before the red tide began or from other states are not affected by this algal bloom.

The red tide toxin also can become aerosolized and cause coughing and irritation of the throat and eyes. People with respiratory conditions such as asthma may experience more pronounced symptoms. Respiratory symptoms usually subside when affected people leave the red tide areas. DSHS will continue to monitor the red tide and will open areas to harvesting when it is safe to do so. For the latest information on the opening and closing of oyster harvest areas, call DSHS at 1-800-685-0361. For information on red tide, visit

Tanager on CDC's West Nile Virus mortality database.

California 10/26/11 West Hollywood, Los Angeles County: A dead bird tested positive for West Nile Virus. There have been at least 128 separate reports of the virus being found in mosquitoes, birds, or squirrels in the county this year. See

California 10/26/11 Marin-Sonoma Mosquito and Vector Control District: Six mosquitoes in Ellis Creek area tested positive for West Nile Virus. See

Florida 10/26/11 Brooksville, Hernando County: A second sentinel chicken has tested positive for West Nile Virus this year. Both chickens are from a flock kept in the Royal Highlands area. See

Massachusetts 10/25/11 Brookline, Norfolk County: A Rabies Advisory issued after one raccoon tests positive for the virus, and another raccoon that more recently attacked a pet is suspected of being rabid. See

CDC Reports:

CDC MMWR Summary for Week ending October 15, 2011:

Published October 21, 2011 / 60(41); 1430-1443

Anaplasmosis . . . 2 . . . Maryland (2),

Babesiosis . . . 5 . . . New York (5),

Brucellosis . . . 1 . . . Arizona, 

Ehrlichiosis . . . 1 . . . Arkansas,

Giardiasis . . . 200 . . . Arizona, Arkansas (4), California (19), Colorado (22), Florida (24), Georgia (14), Idaho, Maine, Maryland (7), Massachusetts (7), Michigan (5),  Missouri (6), Nebraska (3), New York (39), Ohio (11), Oregon (7), Pennsylvania (13), South Carolina (2), Vermont, Virginia, Washington (11), Wisconsin,

Lyme Disease . . .  314 . . . California (2), Delaware (5), Florida (4), Maine, Maryland (41), Massachusetts, Michigan,  New Jersey (90), New York (60), North Dakota (7),  Pennsylvania (97), South Carolina,  Virginia (4),

Rabies (Animal) . . . 38 . . . Alabama (2), California, Michigan (2), New York (10), Virginia (21), West Virginia (2),

Spotted Fever (Confirmed) . . . 5 . . . Georgia (5),

Spotted Fever (Probable) . . . 9 . . . Arkansas, Florida (2), Maryland, Missouri, New York, Ohio, South Carolina, Virginia,

Tularemia . . . 1 . . . Missouri,


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