mosquito-borne arboviruses in arctic america.mosquito-borne arboviruses are prevalent throughout subarctic regions of canada and alaska, principally in the boreal forest extending between latitudes 53 and 66 degrees n, but they have been identified in tundra regions as far north as 70 degrees n. all mosquito-borne agents have been bunyaviruses, comprising principally the snowshoe hare subtype of california encephalitis (ce) virus, but also northway virus. mosquito vectors comprise several aedes species and culiseta inornata, all of which h ...19751602
rabies surveillance in the united states during 1989, 4,808 cases of rabies in animals other than human beings were reported to the centers for disease control, 1.8% more (4,724 to 4,808) than in 1988. eighty-eight percent (4,224/4,808) of those affected were wild animals and 12% (584/4,808) were domestic animals. cases were reported from 49 states, the district of columbia, and puerto rico; hawaii remained rabies-free. skunks (1,657) continued to be the most commonly reported rabid wild animal. for the second consecutive year, more cats ( ...19902276949
ancient dna reveals late survival of mammoth and horse in interior alaska.causes of late quaternary extinctions of large mammals ("megafauna") continue to be debated, especially for continental losses, because spatial and temporal patterns of extinction are poorly known. accurate latest appearance dates (lads) for such taxa are critical for interpreting the process of extinction. the extinction of woolly mammoth and horse in northwestern north america is currently placed at 15,000-13,000 calendar years before present (yr bp), based on lads from dating surveys of macro ...200920018740
endemic food-borne botulism: clinical experience, 1973-1986 at alaska native medical center.clinical features are described for 35 cases of endemic food-borne botulism managed at a single medical center over 14 years. important diagnostic findings included dryness of mucous membranes (90%), weakness (84%), and abnormal pupillary reaction (79%). sensory examination was normal. dizziness, dyspnea, and weakness of the extremities were significantly more common in patients requiring assisted ventilation. transitory neurological deterioration occurred in 38% of patients despite the early ad ...19911957979
prevalence of gastric lesions in racing alaskan sled dogs.human and equine athletes are reported to have a high prevalence of gastric disease, and anecdotal evidence suggests a similar phenomenon applies to racing sled dogs. to investigate the prevalence of gastric disease in racing sled dogs, we conducted 2 gastroscopy studies on dogs competing in the annual iditarod sled dog race. a pilot study of dogs that were either dropped from the 2000 iditarod sled dog race because of illness or that finished the race indicated that, approximately 5 days after ...200312774971
radionuclide concentrations in benthic invertebrates from amchitka and kiska islands in the aleutian chain, alaska.concentrations of 13 radionuclides (137cs, 129i, 60co, 152eu, 90sr, 99tc, 241am, 238pu, 239,249pu, 234u, 235u, 236u, 238u) were examined in seven species of invertebrates from amchitka and kiska islands, in the aleutian chain of alaska, using gamma spectroscopy, inductively coupled plasma mass spectroscopy, and alpha spectroscopy. amchitka island was the site of three underground nuclear test (1965-1971), and we tested the null hypotheses that there were no differences in radionuclide concentrat ...200717057992
assessing capacity for surveillance, prevention, and control of west nile virus infection--united states, 1999 and 2004.indigenous human disease caused by west nile virus (wnv) was first identified in the united states in august 1999 in the greater new york city area. by the end of 2004, human wnv disease had been reported in all states except washington, hawaii, and alaska, and wnv transmission to humans had been documented by five routes: mosquito bites (principally from culex spp.), blood transfusions, organ transplantation, transplacental transfer, and breastfeeding. during 1999-2005, a total of 19,525 cases ...200616484978
arboviruses west and north. 19725034693
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