What causes Rocky Mountain spotted fever? - ProProfs Discuss
Topics-
Products +
     

What causes Rocky Mountain spotted fever?



A. Mycoplasma pneumoniae
B. Rickettsia rickettsii
C. Trepomona pallidum
D. Chlamydia trachomatis
Asked by Marden, Last updated: Dec 05, 2017

This question is part of

Microbiology

+ AnswerRequest Answer
...

1 Answer

John Smith

John Smith

Answered on Sep 09, 2016

Rickettsia rickettsii-rickettsia rickettsii (abbreviated as r. rickettsii) is a unicellular, gram-negative coccobacillus (plural coccobacilli) that is native to the new world. it belongs to the spotted fever group (sfg) of rickettsia and is most commonly known as the causative agent of rocky mountain spotted fever (rmsf). by nature, r. rickettsii is an obligate intracellular parasite that survive by an endosymbiotic relationship with other cells. r. rickettsii is a non-motile, non-spore forming aerobic organism. cells are typically 0.3-0.5 x 0.8-2.0 um in size. they lack a distinct nucleus and membrane bound organelles. their outer membrane is composed mostly lipopolysaccharides. rmsf is transmitted by the bite of an infected tick while feeding on warm-blooded animals, including humans. humans are considered to be accidental hosts in the rickettsiatick life cycle and are not required to maintain the rickettsiae in nature.
 Reply

Search for Google images
Select a recommended image
Upload from your computer
Search for Google images
Select a recommended image
Upload from your computer
Search for Google images
Select a recommended image
Upload from your computer

Email Sent
We have sent an email to your address "" with instructions to reset your password.