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 …

Rocky Mountain spotted fever (RMSF) is a life-threatening disease caused by Rickettsia
rickettsii, an obligately intracellular bacterium that is spread to human beings by ticks. More …

Until the year 2000, only three Rickettsia species were known in South America:(i) Rickettsia
rickettsii, transmitted by the ticks Amblyomma cajennense, and Amblyomma aureolatum …

Rickettsia are best known as strictly intracellular vector‐borne bacteria that cause mild to
severe diseases in humans and other animals. Recent advances in molecular tools and …

This study evaluates the rickettsial presence in Amblyomma ticks from eight areas of the
Amazon forest in Rondônia, Brazil. The following tick species (number in parentheses) were …

Although ticks prevalent in various agro-systems of Pakistan are associated with economic
losses, information is still missing about the tick's diversity, hosts they infest, seasonal …

Brazilian spotted fever (BSF) is a highly lethal disease caused by Rickettsia rickettsii. In the
present study, rickettsial infection was evaluated in 669 Amblyomma aureolatum adult ticks …

In serum samples obtained from all the healthy humans, horses, dogs, and donkeys present
on three farms in the Pedreira Municipality, an endemic area for Brazilian spotted fever, an …

The present study evaluated the rickettsial infection among dogs living in the rural and urban
areas of Monte Negro, state of Rondônia, western Brazilian Amazon. Canine sera were …

From 2000 to 2005, we made several scientific expeditions to determine the ixodid tick fauna
of the Brazilian state of Rondônia. Ticks were collected from vegetation, from wild and …