Rocky mountain spotted fever is tick-borne infection. In endemic areas, the prevalence of the diseases is 15 per 100,000 persons. The disease is characterized by sudden onset of fever and headache. It is caused by gram-negative intracellular bacteria Rickettsia rickettsii. The bacteria have a high predisposition for the endothelial cell. Actin protein polymerization in the cells is important for the spread of bacteria from one cell to another. (Raoult & Parola, 2007) The bacteria cause lymphohistiocytic vasculitis and necrosis of the infected cells. It typically takes 5-7 days from the day of tick bite to the onset of symptoms. ...
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Analysis of Diseases
Overview Chikungunya (CHIK) refers to a re-emerging arboviral disease transmitted by the mosquitos Aedes aegypty and Aedes albopictus (Pialoux 318). The virus belongs to the genus Alphavirus and family Togaviridae. The word chikungunya derives from Makonde language (spoken in Tanzania and northern Mozambique), where it means “to walk bent over” (Halstead 557). This name refers to the main feature of both chronic and acute phase of the disease a change in posture causes by the arthritis and arthralgia (Charrel, Lamballerie and Raoult 769).
History
The disease gained its name after the outbreak in Tanganyika, the modern Tanzania in 1952. However, ...