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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]
Borrelia burgdorferi is a bacterial species of the spirochete class in the genus Borrelia, and is one of the causative agents of Lyme disease in humans. [1] [2] Along with a few similar genospecies, some of which also cause Lyme disease, it makes up the species complex of Borrelia burgdorferi sensu lato.
Ticks can spread the bacteria to each other when co-feeding. [20] If an animal has been infected by a tick and then is bitten by a second tick, the second tick can become infected. [ 22 ] The bacteria are most commonly transmitted to humans through ticks in the nymph stage of development, because they are smaller and less likely to be noticed ...
There were more than 62,000 cases of Lyme disease reported to the US Centers for Disease Control and Prevention in 2022 – nearly a 70% jump from the annual average from 2017 to 2019, according ...
Among early Lyme disease patients, depending on their location, 2%–12% will also have HGA and 2%–40% will have babesiosis. [19] Engorged deer tick. Co-infections complicate Lyme symptoms, especially diagnosis and treatment.
Grist finds that a revised CDC reporting system led to a 70% increase in reported cases of Lyme disease, but experts say more can be done. ... making it easier for states with high infection rates ...
The early localized stage of Lyme disease is usually days to weeks after the initial infection. As the bacteria spreads from this initial point, redness and inflammation expands as well. Sometimes, the space between the initial bite and outer radius of the rash is cleared of bacteria, leading to a bulls-eye shaped rash, also known as erythema ...
Paddy Ssentongo, an infection disease fellow at Penn State Health Milton S. Hershey Medical Center, and his colleagues studied more than 3,500 Americans with babesiosis from 2015 to 2022.