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The brown dog tick, or Rhipicephalus sanguineous, which passes the organism to the dog, is prevalent throughout most of the United States, but most cases tend to occur in the Southwest and Gulf Coast regions, where there is a high concentration of the tick. Ehrlichia is found in many parts of the world [1] and was first recognized in Algeria in ...
Ticks are external parasites, living by feeding on the blood of mammals, birds, and sometimes reptiles and amphibians. The timing of the origin of ticks is uncertain, though the oldest known tick fossils are from the Cretaceous period, around 100 million years old. Ticks are widely distributed around the world, especially in warm, humid climates.
Dermacentor variabilis, also known as the American dog tick or wood tick, is a species of tick that is known to carry bacteria responsible for several diseases in humans, including Rocky Mountain spotted fever and tularemia (Francisella tularensis). It is one of the best-known hard ticks. Diseases are spread when it sucks blood from the host.
"Ticks are classified as "arachnids," and they attach themselves to the dog's skin and suck their blood. Besides causing irritation and inflammation, nasty skin infections can arise.
Haemaphysalis (Ha. leachii, the yellow dog tick of the tropics). Dermacentor (Dermacentor andersoni, the Rocky Mountain wood tick; Dermacentor variabilis, the American dog tick; D. reticulatus, the ornate dog tick of Europe). D. nitens, the tropical horse tick of the Americas, has a one-host lifecycle similar to the boophilids.
Most ticks are specific for some animal, so there are dog ticks, pig ticks, cattle ticks — these ticks really don’t like humans much. But the lone star tick really does like humans,” Platts ...
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