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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]
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 ...
Their slow metabolism during their dormant periods enables them to go prolonged durations between meals. [28] Even after 18 weeks of starvation, they can endure repeated two-day bouts of dehydration followed by rehydration, but their survivability against dehydration drops rapidly after 36 weeks of starvation. [ 29 ]
Nymphal ticks primarily feed on small animals and humans during the spring and early summer, while adult ticks are most active during the winter and seek out hosts from late fall to spring. [ 5 ] In order for a human to be infected by the bacterium, the tick carrying it must be attached for approximately 36 to 48 hours.
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Human monocytotropic ehrlichiosis occurs in California in Ixodes pacificus ticks and in Dermacentor variabilis ticks. [14] Nearly 600 cases were reported to the CDC in 2006. In 2001–2002, the incidence was highest in Missouri, Tennessee, and Oklahoma, as well as in people older than 60.
Summer 2017 has already been declared an especially bad season for ticks due to the mild winter ... one mother is raising concerns about a type of tick so small most people wouldn't be able ...