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Lyme Disease Research Paper

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Lyme disease is also called Lyme borreliosis. It is caused by a bacterium called Borrelia burgdorferi, and transmitted by the black-legged tick, Ixodes scapularis, in the nymph stage (J.F. & Magnarelli, 1993). Therefore, the infected nymph’s density is the most specific ecological indicator of the risk of Lyme disease (J.F. & Magnarelli, 1993). It is an enzootic disease, although humans have been infected as accidental hosts, making it a zoonotic disease (G. & Fish, 1993).
The Peromyscus leucopus, the white- footed mice, is the principle reservoir for the disease transmission to the black-legged tick (Krohne, D.T., & Hoch, 1999). Where the disease originates from, why it has emerged so rapidly and what can be done to reduce the risk of exposure …show more content…

Nymph density was 0.1/m2 in average in the four smallest fragments and decreased to an average of 0.03/m2 in the larger fragments. NIP and DON were significant negative functions of the patch area. The infected nymph’s percentage decreased from 70% on average in smallest fragments to 48% in average in larger fragments.
Discussion
In highly fragmented landscapes, the nymph’s infection prevalence, the density of infected nymphs and density of nymphs were correlated inversely with forest patch area (Nupp, T.E., & Swihart, 1998). These metrics of the population of nymph stages of the ticks are ecological indicators of the risk of Lyme disease (Ostfeld, R.S.., & Keesing, 2000).
The elevated exposure risk in the smallest patches results from two phenomena. Firstly, biodiversity loss that accompanies fragmentation of forests decreases the tick host’s abundance that is poor reservoirs for the B. burgdorferi. Low biodiversity reduces the tick meal’s fraction taken from the poor reservoirs and increases NIP (M' Closkey, 1999). Secondly, from the smallest fragments, the vertebrate species lost are competitors and predators of the main reservoir host, white-footed mice (M' Closkey,

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