Severe Spotted Fever Group Rickettsiosis, Australia

McBride, William John Hannan; Hanson, Joshua; Miller, Robert; Wenck, Drew J.

doi:10.3201/eid1311.070099

Cited by 47 publications

(54 citation statements)

References 11 publications

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“…Cases of R. australis infection are seldom reported in the literature but do occur, with the severity of disease ranging from very mild to life threatening. Fatalities linked to R. australis infection are rare, and severe disease in patients with underlying problems is uncommon (448)(449)(450).…”

Section: Species Identified As Pathogensmentioning

confidence: 99%

Update on Tick-Borne Rickettsioses around the World: a Geographic Approach

et al. 2013

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SUMMARY 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 vector-borne diseases. However, in the past 25 years, the scope and importance of the recognized tick-associated rickettsial pathogens have increased dramatically, making this complex of diseases an ideal paradigm for the understanding of emerging and reemerging infections. Several species of tick-borne rickettsiae that were considered nonpathogenic for decades are now associated with human infections, and novel Rickettsia species of undetermined pathogenicity continue to be detected in or isolated from ticks around the world. This remarkable expansion of information has been driven largely by the use of molecular techniques that have facilitated the identification of novel and previously recognized rickettsiae in ticks. New approaches, such as swabbing of eschars to obtain material to be tested by PCR, have emerged in recent years and have played a role in describing emerging tick-borne rickettsioses. Here, we present the current knowledge on tick-borne rickettsiae and rickettsioses using a geographic approach toward the epidemiology of these diseases.

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Section: Species Identified As Pathogensmentioning

confidence: 99%

Update on Tick-Borne Rickettsioses around the World: a Geographic Approach

et al. 2013

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“…In fact, in 1997, in Portugal, some of the severe cases were caused by R. conorii israelensis (4). Recently, a severe spotted fever case caused by R. australis has been reported (25); the organism was previously considered to be responsible for a benign disease.…”

Section: Historical Backgroundmentioning

confidence: 99%

Questions on Mediterranean Spotted Fever a Century after Its Discovery

Rovery

Brouqui²,

Raoult³

2008

Emerg. Infect. Dis.

134

110

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“…There are several well-documented Rickettsia spp. 2 in Australia of clinical importance: Rickettsia australis (Queensland tick typhus), 3 Rickettsia honei (Flinders Island spotted fever), 4 Rickettsia typhi (murine typhus), 5 and Rickettsia felis (cat flea typhus). 6 Despite its presence on the eastern parts of Australia, spotted fever group rickettsioses have rarely been reported from Western Australia (WA), a state that consists of roughly a third of the continent, or an area of over 2.5 million km 2 .…”

Section: Introductionmentioning

confidence: 99%

Seroepidemiological Study of Outdoor Recreationists' Exposure to Spotted Fever Group Rickettsia in Western Australia

Abdad

Cook

Dyer

et al. 2014

The American Society of Tropical Medicine and Hygiene

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Abstract. Bushland activity has previously been linked to rickettsial exposure in eastern and central regions of Australia, whereas little is known about the risks in Western Australia. The isolation of Rickettsia gravesii sp. nov. from Amblyomma triguttatum ticks and anecdotal reports of low-grade illness among bush recreationists raised the possibility of rickettsial transmission in the State. This study investigated rickettsial seroprevalence and potential risk of exposure to the spotted fever group rickettsiae in rogainers. Our results showed that rogainers active in the bush had a significantly higher risk of seropositivity (immunofluorescence total antibody titer 128) for the spotted fever group Rickettsia (odds ratio [OR] = 14.02, 95% confidence interval [CI] = 1.38-142.07) compared with a reference population, the overall seroprevalence in the rogainer group being 23.1%.

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Severe Spotted Fever Group Rickettsiosis, Australia

Cited by 47 publications

References 11 publications

Update on Tick-Borne Rickettsioses around the World: a Geographic Approach

Update on Tick-Borne Rickettsioses around the World: a Geographic Approach

Questions on Mediterranean Spotted Fever a Century after Its Discovery

Seroepidemiological Study of Outdoor Recreationists' Exposure to Spotted Fever Group Rickettsia in Western Australia

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