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 …

The traditional identification of bacteria on the basis of phenotypic characteristics is
generally not as accurate as identification based on genotypic methods. Comparison of the …

The class Alphaproteobacteria is comprised of a diverse assemblage of Gram-negative
bacteria that includes organisms of varying morphologies, physiologies and habitat …

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 …

Orientia tsutsugamushi is the etiological agent of scrub typhus, an acute, mite-borne, febrile
illness that occurs in the Asia-Pacific region. Historically, strain characterization used …

Bacterial strain typing, or identifying bacteria at the strain level, is particularly important for
diagnosis, treatment, and epidemiological surveillance of bacterial infections. This is …

ABSTRACT In July 2006, an Australian tourist returning from Dubai, in the United Arab
Emirates (UAE), developed acute scrub typhus. Her signs and symptoms included fever …

Rickettsia felis is an emerging insect-borne rickettsial pathogen and the causative agent of
flea-borne spotted fever. First described as a human pathogen from the USA in 1991, R. felis …

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 …

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 …