National 04/08/11 fda.gov: The U.S. Food and Drug Administration today allowed marketing of the first test to help diagnose people with signs and symptoms of dengue fever or dengue hemorrhagic fever, a leading cause of illness and death in the tropics and subtropics. The dengue virus is
transmitted to humans by the bite of an infected Aedes mosquito. As many as 100 million people worldwide are infected by the virus each year, according to the U.S. Centers for Disease Control and Prevention (CDC). Symptoms of dengue fever include high fever, severe headache, severe pain behind the eyes, joint pain, muscle and bone pain, rash and mild bleeding involving the nose or gums, and easy bruising. Most reported dengue cases in the continental United States occur in people returning from travels to tourist destinations in Latin America, the Caribbean and Southeast Asia. Dengue is also endemic in the U.S. in Puerto Rico, the Virgin Islands and some U.S.-affiliated Pacific Islands. Recently, dengue outbreaks have occurred in Hawaii, Texas, and Florida.
The DENV Detect IgM Capture ELISA test detects antibodies to dengue virus in blood samples from patients who have signs and symptoms of dengue. The test will be available for use in clinical laboratories and will assist in the diagnosis of dengue, which can improve patient care and management. The DENV Detect IgM Capture ELISA test is based on technology patented by the CDC and manufactured by Seattle-based Inbios Inc. “Cases of dengue fever or dengue hemorrhagic fever can be potentially fatal for people who do not recognize the symptoms,” said Alberto Gutierrez, Ph.D., director of the Office of In Vitro Diagnostics Device Evaluation and Safety in FDA’s Center for Devices and Radiological Health. “This test will now aid health care professionals in their effort to more effectively diagnose dengue.” The FDA reviewed data for the test via the “de novo” pathway, an alternative path to market for devices that are low to moderate risk and may not require premarket approval (PMA), but are of a new type, and therefore may not be able to be cleared in a “510(k)” premarket notification.
People who believe they have dengue should immediately contact a health care professional. There are no FDA-licensed vaccines to prevent dengue and no medicines specifically approved to treat the infection. The test should not be used in people who do not show signs or symptoms of dengue. Diagnostic testing for dengue is complicated by the fact that an IgM antibody response to the dengue virus infection is not detectable until 3-5 days after the onset of fever, which can produce a negative test result even though a person has dengue. During this ‘IgM negative window’ the dengue virus is present in the bloodstream. There are currently no FDA-cleared or approved tests for direct detection of dengue virus. This new test shows cross-reaction with other closely related viruses such as those that cause West Nile disease. However, in most patient testing situations found in the United States, a positive test result in a patient with signs or symptoms consistent with dengue should be considered presumptive evidence of dengue.
California 04/11/11 mydesert.com: by Keith Matheny – Home foreclosures breed mosquitoes. Foreclosures, or home abandonments preceding a foreclosure, often leave behind full and no-longer-running swimming pools, hot tubs or fountains. And those can become prime breeding ground for mosquitoes that lay their eggs in water and begin life as aquatic larvae before getting their wings. “We’re in a desert; there’s very little natural standing water,” said Matthew Smith, lead supervisor at the Coachella Valley Mosquito and Vector Control District. “So anywhere you place a large body of water and it becomes stagnant, it’s extremely attractive to mosquitoes.” Mosquitoes can carry harmful diseases for humans, including West Nile Virus and Eastern Equine Encephalitis.
The vector control district identified and treated 1,200 “green pools” valleywide in 2009; 800 last year, Smith said. The district has treated nearly 600 such pools so far this year – and that’s before the agency’s best method of searching for them, an annual aerial inspection of the valley that was slated for Sunday. “We take high-resolution photos of the entire Coachella Valley,” he said. “And everything will be geo-referenced so we can spot a pool that looks suspect, find out where it is and send a technician to verify it.” That’s helpful, La Quinta community safety manager Deby Conrad said, as green pools often aren’t evident even standing just outside of a home. “Especially in gated communities, where the HOAs take care of the yard, you often can’t even tell the house is empty,” she said. Vector district officials tag a suspect property, asking owners to contact them. And most call back and allow inspections and treatment, Smith said.
Vector control personnel don’t drain pools, but instead treat with mosquitofish, a small fish that eats mosquito larvae, or chemical treatments, Smith said. The vector agency has a good working relationship with banks that own properties after foreclosures, Smith said. But in instances where the agency is unable to find an owner or obtain permission for access, it has a blanket warrant issued by a Riverside County Superior Court judge to enter, inspect and treat green pools. “The reason we do this is strictly for public health,” Smith said. “When you start speaking in legal terms and using words like warrant, forced entry, cutting locks it really conjures up this image of a government agency imposing government will. We’re just simply trying to decrease the threat level from mosquito-borne illnesses and ensure the safety of the public.”
California 04/10/11 missiontimescourier.com: County Vector Control
officials announced today that a Pacific Coast tick found on Feb. 1, near Los Penasquitos Canyon Preserve during routine monitoring has tested positive for tularemia, also known as “rabbit fever.” “Tularemia is a bacterial, vector-borne disease that can be transmitted to humans through the bite of infected ticks, or through direct contact with an infected animal such as rabbits and other rodents,” said Jack Miller, Director of the County Department of Environmental Health. “We recommend using insect repellent to prevent ticks and other insects from biting, especially when hiking in bushy areas. Flea and tick control products should also be used on pets.” Ticks get tularemia by biting infected rabbits, rodents or other animals.
Maine 04/10/11 sunjournal.com: by V. Paul Reynolds – Would it be fair to say
that a wolf is to an elk what a coyote is to a deer? A wolf, like a coyote, is a meat-eating predator that team-hunts its prey. An elk, like a deer, is a browsing ruminate, and an ideal, protein-loaded dinner source for an opportunistic predator. If you Google Earth from a Maine deer wintering area to an elk wintering basin in Yellowstone Park, the life and death dramas that play out in these geographically disparate areas are much the same. The Western animals are just larger.
In Maine, coyotes kill deer.
In Yellowstone, wolves kill elk.
The similarities don’t stop here, either. In 1995, there were a record 20,000 elk in the northern end of Yellowstone Park, the largest elk count since U.S. Fish and Wildlife Service (USFWS) started counting heads in 1930. Since 1995, there has been a constantly decreasing number of elk in Yellowstone. In 2010 the USFWS elk census counted just 5,000 elk, a 24 percent decline in one year’s time!
What’s the story? It’s not rocket science. In 1995, USFWS introduced the wolf to Yellowstone. Wolves eat elk. The rest is history. As wolf numbers increased there was a corresponding downward trend in elk numbers. “Recovery” is the term wildlife biologists use to describe the reestablishment of an animal in healthy numbers. Well, thanks to a steady diet of elk steaks, the Yellowstone wolf “recovered” nicely.
And in Maine, thanks to the coyote that came on the scene back in the 1960s, Maine’s deer numbers have also been on a downward spiral. During this free fall of Maine’s north woods deer numbers, most of our state wildlife biologists caution sportsmen not to jump to conclusions, that deer mortality can be attributed as much to winter severity and habitat as predation by coyotes. Fair enough, but aren’t coyotes a variable that can be “managed” easier than winter snows, or spruce budworm epidemics?
Last year, the Feds began to see the light. But when the USFWS attempted to declare the Yellowstone wolf “recovered” and remove it from the endangered species status, animal rights organizations went to court to prevent a delisting! Out West, sportsmen and ranchers are fed up.
In a recent article in Bugle Magazine, Karen Loveless, a Montana wildlife biologist is blaming “predators and drought” for the precipitous decline in Yellowstone elk populations. By predators, she means wolves and bears. A Montana rancher I know who works a good-sized ranch just outside Yellowstone Park just laughs when asked about the effect of the drought on the elk mortality. “Wolves and grizzlies are killing off the elk,” says he “In the spring the bears take a lot of the elk calves and, in winter, the wolves do a job on the winter-weary, rut-weakened elk.”
Of course, in the elk/wolf and coyote/deer debate, the biologists, and other multiple-source theorists, can argue that the predator evidence is purely anecdotal, that a few trapper stories about coyote-ravaged deer in a winter yard don’t really tell us much. They have a point. In Montana or Maine, we have no quantifiable data when it comes to how many elk or deer are killed by predators, whether they be bears, coyotes or wolves.
Clearly, though, there is an indisputable cause-and-effect relationship: the more wolves the fewer elk; the more coyotes the fewer deer. So it only follows that the way to have more deer in Maine, or elk in Montana, is to manage the predator populations. In Montana, for the time being, the wolf remains protected at the expense of elk numbers. In Maine, the north woods whitetails are getting more and more scarce, partly due to predation by bears and coyotes. We can’t “manage down” our bear numbers because it has become a critical, rural economic commodity, and we can’t conduct coyote-snaring programs in northwoods deer yards because the state signed off on a consent decree with USFWS not to conduct snaring in lynx habitat.
Believe it or not, there was a time not so long ago, when managing wildlife was predicated mostly on common sense and nuts-and-bolts biology, not politics.
The author is editor of the Northwoods Sporting Journal. He is also a Maine Guide, co-host of a weekly radio program “Maine Outdoors” heard Sundays at 7 p.m. on The Voice of Maine News-Talk Network (WVOM-FM 103.9, WCME-FM 96.7) and former information officer for the Maine Dept. of Fish and Wildlife. His e-mail address is paul@sportingjournal.com.
Texas 04/11/11 hpj.com: Excerpts – ” ‘Residents of the Plum Creek Watershed area of Hays, Caldwell and Travis counties have expressed concern about diseases feral hogs may transmit to other animals or humans,’ said Jared Timmons, an AgriLife Extension assistant addressing feral hog issues in those counties.”
“Jim Cathey, Ph.D., an AgriLife Extension specialist in wildlife ecology, said the three diseases people should have the greatest cause for concern about relative to feral hogs in Texas are swine brucellosis, psuedorabies and tularemia, but that the animals may harbor other diseases as well. Other diseases potentially caused or carried by feral swine include many infectious or parasitic diseases transmitted by fecal material, said Don Davis, Ph.D., Texas AgriLife Research specialist in parasitic and infectious diseases of wildlife at the College of Veterinary Medicine at Texas A&M University. ‘In many circumstances, traditional livestock, exotic game and white-tailed deer are fed supplements such as protein cubes, pellets or corn,’ Davis said. ’If these supplements are either fed on the ground or in places where feral swine have also been present, then the possibility of fecal contamination of the food is a real possibility.’ “
“ Timmons said that hunters who come in contact with feral hogs may risk exposure to swine brucellosis, tularemia and other diseases. ‘Feral hogs that show signs of illness should not make it onto the menu,’ he said. ‘And to further reduce chances of exposure, a double set of rubber or plastic gloves should be worn while processing and handling meat from feral hogs. Likewise, shield your eyes with glasses, wash your hands often with soap and warm water, and clean tools and surfaces with a dilute bleach solution.’ “ (For complete article go to http://www.hpj.com/archives/2011/apr11/apr11/0331DiseaseinFeralHogs1PIXs.cfm )
Canada:
Quebec 04/11/11 physorg.com: In recent years, pet rats have become quite popular among children thanks to popular rat characters like Remy in the film Ratatouille or Scabbers in the Harry Potter series. However, this new trend places children at risk of contracting Rat bite fever (RBF). Despite its name, no biting is necessary as the infection can be contracted by a simple scratch or even a kiss from the pet. RBF is a systemic infection that carries a mortality rate of 7 to 10 percent if untreated. In Canada, one adult and two pediatric cases of RBF have been reported since 2000. However, between January 2006 and September 2007, the CHU Sainte-Justine Hospital treated one confirmed case and two suspected cases.
“At the Division of Infectious Diseases, we were puzzled and concerned faced with such a high concentration of cases,” says Karine Khatchadourian, a Université de Montréal pediatrics resident who recently published her insights into RBF in Pediatrics & Child Health. The children treated at CHU Sainte-Justine, a boy and two girls, all had a wide range of symptoms: high fever, abdominal pain, vomiting, severe headaches, diarrhea, stiffness and pain in the neck, wrists, hips, knees, as well as hemorrhagic pustules on the hands and feet. The three children were cured with a simple penicillin treatment. “Diagnosing the disease remains very difficult,” says Khatchadourian. “It can easily be confused with various viral or bacterial infections such as meningococcemia, Lyme disease or Rocky Mountain spotted fever.” “Pediatricians should ask the parents about pets,” says Khatchadourian. “And in the case of rats, they should explain the risks.” She questions whether pet stores and the SPCA should even sell the rodents. In her opinion, parents should stick to cats and dogs and steer clear of rats. Provided by University of Montreal.
Travel Warnings:
Barbados 04/11/11 caribbean360.com: Health authorities in Barbados have renewed their call for public vigilance following at least one death linked to the dreaded dengue fever this year. A recent release issued by the Ministry of Health has revealed that over the first nine weeks of this year, 135 cases of dengue fever were confirmed by laboratory testing and one death was recorded. The ministry also revealed that 570 cases of dengue fever and four deaths were recorded in 2010. This compares to 2008, when during the first nine weeks of the year, two deaths were verified and 212 cases were documented, following an epidemic in 2007.