• Ticks
  • Questing A. cajennense ticks were collected at or near sites of presumed or confirmed cases of spotted fever rickettsiosis in Jujuy Province and evaluated by polymerase chain reaction assays for spotted fever group rickettsiae. (ajtmh.org)
  • DNA of R. rickettsii was amplified from a pool of A. cajennense ticks and from tissues of one of four patients who died during 2003-2004 after illnesses characterized by high fever, severe headache, myalgias, and petechial rash. (ajtmh.org)
  • Phylogenetic analysis of spotted fever group rickettsiae based in gltA , 17 kDa, and rOmpA genes amplified by nested PCR from ticks in Japan. (ajtmh.org)
  • In the case of Rocky Mountain spotted fever, ticks are the natural hosts, serving as both reservoirs and vectors of R. rickettsii . (blogspot.com)
  • typhus
  • Relationship between Rocky Mountain spotted fever and exanthematic typhus of Sao Paulo. (ajtmh.org)
  • Some synonyms for Rocky Mountain spotted fever in other countries include â tick typhus,â â Tobia feverâ (Colombia), â São Paulo feverâ or â febre maculosa â (Brazil), and â fiebre manchada â (Mexico). (blogspot.com)
  • Rocky Mount
  • We describe the first molecular confirmation of Rickettsia rickettsii , the cause of Rocky Mountain spotted fever (RMSF), from a tick vector, Amblyomma cajennense , and from a cluster of fatal spotted fever cases in Argentina. (ajtmh.org)
  • Fatal Rocky Mountain spotted fever in Maryland, 1901. (ajtmh.org)
  • Rocky Mountain spotted fever is the most lethal and most frequently reported rickettsial illness in the United States. (blogspot.com)
  • Rocky Mountain spotted fever remains a serious and potentially life-threatening infectious disease. (blogspot.com)
  • Despite the availability of effective treatment and advances in medical care, approximately three to five percent of patients who become ill with Rocky Mountain spotted fever die from the infection. (blogspot.com)
  • However, effective antibiotic therapy has dramatically reduced the number of deaths caused by Rocky Mountain spotted fever. (blogspot.com)
  • Rocky Mountain spotted fever, like all rickettsial infections, is classified as a zoonosis. (blogspot.com)
  • patients
  • The diagnosis of spotted fever rickettsiosis was confirmed in the other patients by indirect immunofluorescence antibody and immunohistochemical staining techniques. (ajtmh.org)