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There are many types of ticks in the U.S., and many of them can spread multiple pathogens that cause illness in humans. Here are some of the tick species that experts worry most about from a ...
Tick species are widely distributed around the world. [58] They tend to flourish more in warm, humid climates, because they require a certain amount of moisture in the air to undergo metamorphosis, and low temperatures inhibit their development of eggs to larvae. [59] The occurrence of ticks and tick-borne illnesses in humans is increasing. [60]
The zebra tick or yellow back tick (Rhipicephalus pulchellus) is a species of hard tick.It is common in the Horn of Africa, with a habitat of the Rift Valley and eastward. It feeds upon a wide variety of species, including livestock, wild mammals, and humans, and can be a vector for various pathogens.
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.
Lyme disease, also known as Lyme borreliosis, is a tick-borne disease caused by species of Borrelia bacteria, transmitted by blood-feeding ticks in the genus Ixodes. [4] [9] [10] The most common sign of infection is an expanding red rash, known as erythema migrans (EM), which appears at the site of the tick bite about a week afterwards. [1]
Tick paralysis is believed to be due to toxins found in the tick's saliva that enter the bloodstream while the tick is feeding. The two ticks most commonly associated with North American tick paralysis are the Rocky Mountain wood tick (Dermacentor andersoni) and the American dog tick (Dermacentor variabilis); however, 43 tick species have been implicated in human disease around the world. [1]
People can get infected with Babesia parasites by the bite of an infected tick, by getting a blood transfusion from an infected donor of blood products, or by congenital transmission (an infected mother to her baby). [4] Ticks transmit the human strain of babesiosis, so it often presents with other tick-borne illnesses such as Lyme disease. [5]
A Study Reveals Potential Key to Human Hibernation. Darren Orf. December 2, 2024 at 8:00 AM ... falling asleep for big chunks of time while the universe ticks on could be a necessity of future ...
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