• Definitions

    definitions

    Doxycycline

    by  • November 5, 2011 • Antibiotic, D, Definitions, Lyme Disease, Treatments

    Doxycycline is bacteriostatic unless given in high doses. If high blood levels are not attained, treatment failures in early and late disease are common. However, these high doses can be difficult to tolerate. For example, doxycycline can be very effective but only if adequate blood levels are achieved either by high oral doses (300 to […]

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    Tularemia (tu·la·re·mia)

    by  • November 3, 2011 • Bacterial, Definitions, Infections, T

    an infectious, plaguelike, zoonotic disease caused by infection with the bacillus Francisella tularensis. It is found primarily in rodents but also affects humans and many other animals; rabbits, squirrels, and muskrats are the primary source of infection. It is transmitted by the bites of deer flies, fleas, and ticks; by contact with contaminated animals or […]

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    Relapsing fever

    by  • November 3, 2011 • Definitions, Infections, R

    an acute infectious, systemic, usually self-limited disease of worldwide distribution, caused by various species of the genus Borrelia; it may be either endemic or epidemic and is transmitted by the bites of either the body louse (Pediculus humanus corporis), for which humans are the reservoir, or Ornithodoros ticks, for which rodents and other animals are […]

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    Rickettsia rickett´sii

    by  • November 3, 2011 • Definitions, Infections, R

    the etiologic agent of Rocky Mountain spotted fever, transmitted by Dermacentor, Rhipicephalus, Haemaphysalis, Amblyomma and Ixodes ticks from a natural reservoir in rodents, dogs, and foxes. Called also Dermacentroxenus rickettsii.

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    Rocky Mountain spotted fever

    by  • November 3, 2011 • Definitions, Infections, R

    an acute, infectious, sometimes fatal disease caused by Rickettsia rickettsii, usually transmitted by the bite of an infected ixodid tick, usually Dermacentor andersoni (wood tick) or D. variabilis (dog tick); it occurs only in North and South America. It is characterized by sudden onset; chills; fever lasting 2 to 3 weeks; a cutaneous rash that […]

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    Colorado tick fever

    by  • November 3, 2011 • C, Definitions, Infections, Viral

    an acute, benign febrile infection caused by an arenavirus, transmitted by the bite of the wood tick, Dermacentor andersoni, occurring in areas in which the tick is distributed, i.e., the Rocky Mountain area and Pacific slope of the United States and Canada, and characterized chiefly by a biphasic course and leukopenia. Called also mountain tick […]

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    Q Fever

    by  • November 3, 2011 • Definitions, Infections, Q

    an acute, generally self-limited rickettsial infection caused by Coxiella burnetii, characterized by fever, chills, headache, myalgia, malaise, and very rarely rash, and sometimes complicated by mild pneumonia (Q fever pneumonia, q.v.), hepatitis, and endocarditis. In humans, it is usually acquired by inhalation of airborne organisms in infected dust or aerosols derived from infected domestic animals, […]

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