Northern Trek: The Spread of Ixodes scapularis into Canada

This study is an extension of previous work published in 20141 showing the predicted expansion of the distribution of the Lyme disease tick vector into Canada,” says Maria Diuk-Wasser, a professor at Columbia University who focuses on the emergence of vector-borne diseases. “Although the results are not qualitatively different, it represents an improvement on the previous study by incorporating the full range of and most up-to-date climate models and emission scenarios.” Importantly, she says, the new study accounts for the inherent uncertainty in such models and scenarios but also indicates that an increased risk can be expected in any event. Canada’s public health officials track the leading edge of the tick’s range expansion in several ways: through laboratory identification of ticks found on patients by doctors and veterinarians; by conducting surveys in which a large cloth is dragged across a woodland floor, picking up any ticks that are questing for a host to bite; and by compiling data on reported cases of human infection. The Canadian government has provided information on how to avoid tick bites and identify the symptoms of Lyme disease.10 “We’ll all need to participate in adapting to the tick’s arrival,” says Ogden. Sharon Levy based in Humboldt County, CA, has covered ecology, evolution, and environmental science since 1993. She is at work on the book The Marsh Builders: Wetlands in the Fight for Clean Water....
Source: EHP Research - Category: Environmental Health Authors: Tags: Science Selection Source Type: research

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Authors: Gameon JA, Skewes MC Abstract American Indian/Alaska Native and First Nations communities suffer from health disparities associated with multiple forms of trauma exposure. Culturally appropriate interventions are needed to heal current and historical trauma wounds. Although there are evidence-based trauma interventions for other populations, few have been implemented or evaluated with Native communities. Understanding the extant research on trauma interventions in Native communities is crucial for advancing science and filling gaps in the evidence base, and for meeting the needs of underserved people. In t...
Source: American Journal of Community Psychology - Category: Psychiatry Tags: Am J Community Psychol Source Type: research
Authors: Arora A, Sandhu HS, Brasch J Abstract The authors would like to correct the footnote of Table 2. PMID: 31512158 [PubMed - as supplied by publisher]
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Source: Epilepsy and Behavior - Category: Neurology Source Type: research
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Source: Neurological Sciences - Category: Neurology Source Type: research
Abstract Rocky Mountain spotted fever (RMSF), caused by Rickettsia rickettsii, is a severe tick-borne infection endemic to the Americas. Oral doxycycline is effective, but during severe life-threatening disease, intravenous therapy is recommended. Unfortunately, intravenous formulations of doxycycline are not always available. Therefore, we aimed to determine the susceptibility of R. rickettsii to an alternative parenteral agent, tigecycline, in vitro and in vivo. To determine the minimum inhibitory concentration of tigecycline, R. rickettsii-inoculated Vero cells were incubated with medium containing tigecycline....
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Source: EHP Research - Category: Environmental Health Authors: Tags: Commentary Source Type: research
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Source: EHP Research - Category: Environmental Health Authors: Tags: Research Source Type: research
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