Several dogs in the US have died following infections by a newly discovered tick-borne disease from the same genus responsible for 'spotted fever'. Scientists are watching the bacterium closely for ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. SAN DIEGO — Rickettsia is spread by ticks, ...

Researchers have identified a new species of Rickettsia bacteria that may cause significant disease in dogs and humans. This new yet unnamed species, initially identified in three dogs, is part of the ...

Rickettsia rickettsii might be the deadliest one of 25 strains of Rickettsia bacteria that cause Rocky Mountain Spotted Fever (RMSF). Ticks transmit the bacterial pathogen to humans through bites, and ...

Researchers from North Carolina State University have confirmed that a species of Rickettsia first seen in dogs in 2018 is a new species of bacteria. The new species, dubbed Rickettsia finnyi, is ...

There's some good news in New Jersey about a potentially deadly tick-borne bacterium. Researchers examined more than 3,000 ticks in the Garden State and found only one carrying Rickettsia rickettsii, ...

Rickettsia spp. are Gram-negative, obligate, intracellular bacterial pathogens. Most rickettsial species have a life cycle that involves both an arthropod vector and a vertebrate host. The high ...

Six people in California have reportedly caught a "severe and fatal" tickborne disease named Rocky Mountain spotted fever (RMSF), with three dying from the infection. According to a Morbidity and ...

Rocky Mountain spotted fever is a life-threatening, tick-borne disease caused by Rickettsia rickettsii. This disease is rarely reported in Arizona, and the principal vectors, Dermacentor species ticks ...

Since 1989 one of us (Dr. Raoult) has investigated the reactivity of serum specimens from patients with various rickettsioses to define the serologic criteria for several of these infections in the ...