The nurse rabbit of uninfected lice remained asymptomatic and seronegative. Those rabbits used to feed infected lice developed bacteremia and seroconverted. [ncbi.nlm.nih.gov]

Rickettsia rickettsii infections can cause a wide range of clinical manifestations, ranging from asymptomatic or mild febrile illness to overwhelming and fatal disease [1-6]. [scielo.br]

A cluster of tick-borne infections: association with military training and asymptomatic infections due to Rickettsia rickettsii. Trans R Soc Trop Med Hyg. 1992;86321- 325Google ScholarCrossref 13. Yevich SJSanchez JLDeFraites RF et al. [jamanetwork.com]

During the summer of 2001, French United Nations troops in Kosovo collected ticks on asymptomatic soldiers and dogs in the Morina region. [doi.org]

Brazilian practitioners should be aware of the possibility of Brazilian spotted fever as a cause of fulminant primary sepsis with ARDS; improved laboratory methods are necessary for the rapid diagnosis of such cases. [ncbi.nlm.nih.gov]

We report a probable case of atypical fulminant Brazilian spotted fever that presented full-blown septic shock associated with Adult Respiratory Distress Syndrome (ARDS) and delayed uncharacteristic rash with an over four-fold increase in reciprocal IgM [ncbi.nlm.nih.gov]

The patient was transferred to the intensive care unit where a new chest x ray showed extensive bilateral alveolointerstitial infiltrate (Figure 1-A), compatible with Adult Respiratory Distress Syndrome (ARDS). [scielo.br]

Severe cases, including those of patients with encephalitis, disseminated intravascular coagulopathy, multiorgan failure, and acute respiratory distress syndrome, have been reported ( 9, 158, 159, 161 ). [doi.org]

RESULTS: The multiplex PCR assay was specific at discriminating each species from FFPE controls of unrelated bacterial, viral, protozoan, and fungal pathogens that cause skin lesions, as well as other closely related spotted fever group Rickettsia species [ncbi.nlm.nih.gov]

Failure to receive antibiotic therapy, especially during the initial stages of the disease, may lead to end-organ failure (heart, kidney, lungs) meningitis, brain damage, shock, and even death. [en.wikipedia.org]

Fatal rickettsial meningitis in Hong Kong: a need for rapid laboratory diagnosis. Scand J Infect Dis 1995;27:527-8. [ Links ] 13. Childs J., Shope R.E., Fish D., et al. Emerging Zoonosis Emerg Infect Dis 1998;4:453-4. [ Links ] 14. [scielo.br]

Epidemic typhus meningitis in the southwestern United States. Clin. Infect. Dis. 32 : 979 -982. 194. Masters, E. J., G. S. Olson, S. J. Weiner, and C. D. Paddock. 2003. Rocky mountain spotted fever—a clinician's dilemma. Arch. Intern. [doi.org]

The patient had fever, erythematous rash, abdominal pain, and severe central nervous system involvement with convulsive crisis. The diagnosis of R. rickettsii infection was established by immunohistochemistry and specific polymerase chain reaction. [ncbi.nlm.nih.gov]

RMSF may result in various neurological manifestations, including deafness, convulsions, and hemiplegia. [doi.org]

Abstract Five serovars of Leptospira interrogans, Leptospira biflexa, Leptonema illini, and Rickettsia rickettsii were examined and found not to contain the 39-kDa antigen (P39) of Borrelia burgdorferi, the Lyme disease spirochete. [ncbi.nlm.nih.gov]

Lo M, Bulach DM, Powell DR, Haake DA, Matsunaga J, et al. (2006) Effects of temperature on gene expression patterns in Leptospira interrogans serovar Lai as assessed by whole-genome microarrays. Infect Immun 74: 5848–5859. [journals.plos.org]

We describe a serosurvey for Rickettsia rickettsii, R. typhi, Coxiella burnetii, Bartonella henselae, B. quintana, and Ehrlichia chaffeensis in 437 healthy people from a Brazilian rural community. [ncbi.nlm.nih.gov]

Serological cross-reactions between Bartonella quintana, Bartonella henselae, and Coxiella burnetii. J Clin Microbiol 1996;34:2270-4. [ Links ] 35. Maurin M., Eb F., Etienne J., Raoult D. [scielo.br]

Neorickettsia sennetsu (Misao and Kobayashi 1956) Dumler et al. 2001, comb. nov. Rickettsia sibirica Zdrodovskii 1948, species. Type strain: (see also Global Catalogue of Microorganisms ) 246 ATCC VR-151. [bacterio.net]

RR was easily visualized within cytoplasm and nuclei of endothelial cells in association with perivascular lymphocytic infiltrates and less frequently with vasculitis or non-inflamed vasculature. [ncbi.nlm.nih.gov]