LYME DISEASE –
The incidence of Lyme disease has increased approximately 80 percent in the
Lyme disease and other tick-borne illnesses have been increasing and spreading with ticks moving from warmer areas into more northern latitudes. It is projected that this trend will continue with warmer temperatures associated with climate change.
Background: Tick-borne illnesses represent an important class of emerging zoonoses, with climate change projected to increase the geographic range within which tick-borne zoonoses might become endemic. We evaluated the impact of latitude on the rate of change in the incidence of Lyme disease in the
Methods: We estimated state-level year-on-year incidence rate ratios (IRRs) for Lyme disease for the period 1993 to 2007 using Poisson regression methods. We evaluated between-state heterogeneity in IRRs using a random-effects meta-analytic approach. We identified state-level characteristics associated with increasing incidence using random-effects meta-regression.
Results: The incidence of Lyme disease in the
Interpretation. Lyme disease incidence increased in the
Lyme disease is caused by the bacterium _Borrelia burgdorferi_, and is transmitted to humans by the bite of infected _Ixodes_ ticks. In areas of the northeastern, mid-Atlantic and north-central
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