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5 terms

Rickettsiae, Mycoplasmas, and Chlamydiae (1321)

Diseases caused by rickettsiae, mycoplasmas and chlamydiae
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Rocky Mountain spotted fever
Organism: Rickettsia rickettsii
Transmission: Tick bite
Symptoms: Headache, chills, fever, characteristic rash on extremities and trunk
Test/Specimen: Blood for serologic tests; skin biopsy for direct fluorescent microscopy
Typhus
Organism: Rickettsia prowazekii
Transmission: Tick bite
Symptoms: Fever, rash, confusion
Test/Specimen: Blood for serology
Atypical (walking) pneumonia
Organism: Mycoplasma pneumoniae
Transmission: Respiratory sectretions
Symptoms: Fever, cough, chest pain
Test/Specimen: Blood, sputum for culture
Nongonococcal urethritis and vaginitis
Organism: Chlamydia trachomatis
Transmission: Sexual
Symptoms: May be asymptomatic
Test/Specimen: Swabs for DNA probe and serologic testing
Inclusion conjunctivitis, pneumonia
Organism: Chlamydia trachomatis
Transmission: During birth
Symptoms: Severe conjunctivitis or afebrile pneumonia in newborns
Test/Specimen: Swabs for DNA probe and serologic testing