During most of the 20th century, the epidemiology of tick-borne rickettsioses could be
summarized as the occurrence of a single pathogenic rickettsia on each continent. An …

Tick-borne rickettsioses are caused by obligate intracellular bacteria belonging to the
spotted fever group of the genus Rickettsia. These zoonoses are among the oldest known …

Rickettsioses are among the oldest known infectious diseases. In spite of this, and of the
extensive research carried out, many aspects of the biology and epidemiology of tick-borne …

In the last 20 years, the rickettsial field has undergone significant evolution at the
epidemiological, microbiological, and molecular levels. Between 1984 and 2004 alone, at …

Between 1984 and 2004, nine more species or subspecies of spotted fever rickettsiae were
identified as emerging agents of tick-borne rickettsioses throughout the world. Six of these …

Recently in the field of rickettsiology, an explosion of new isolates of pathogens have
received species designation and new disease names, all of which have been relatively …

During most of the 20th century, Rickettsia rickettsii, the agent of Rocky Mountain spotted
fever, was considered the only tick-borne rickettsia associated with human diseases in the …

Tick-borne rickettsioses are caused by obligate intracellular bacteria belonging to the
spotted fever group of the genus Rickettsia. These infections are among the oldest known …

To determine the prevalence and distribution of rickettsial pathogens around the world,
scientists have relied more and more upon molecular techniques in addition to serological …

Rickettsioses are caused by obligate intracellular bacteria within the genus Rickettsia,
mainly transmitted by arthropods. Until recently, Mediterranean spotted fever (MSF) caused …