Rocky mountain spotted fever
Rocky mountain spotted fever (RMSF), also known as Brazilian spotted fever, is an infectious disease caused by Rickettsia rickettsii which are usually transmitted by infected ticks bites.
RMSF distribution correlates with the presence of its vectors, and has been identified the United States of America and in many parts of Central and South Americas, and generally is a notifiable disease in most of the countries 2.
There is a classical triad of nonspecific symptoms which are not always present 1:
The symptoms are in general similar to viral syndromes and the epidemiological features are essential to better direct the diagnosis 1.
Serological analysis by immunofluorescence reaction can be used as sensitive method to diagnosis rickettsioses, however the PCR method is known as more useful as it can discriminate the different species of Rickettsia 1.
Rickettsia rickettsii is a Gram-negative coccobacillus and is an obligate intracellular bacterium 1-2.
Vectors and transmission
Humans are known as accidental hosts.
- 1. Bacci MR, Namura JJ. Association between sepsis and Rocky Mountain spotted fever. BMJ Case Rep. 2012;2012 (dec06 1): . doi:10.1136/bcr-2012-007024 - Free text at pubmed - Pubmed citation
- 2. Woods CR. Rocky Mountain spotted fever in children. Pediatr. Clin. North Am. 2013;60 (2): 455-70. doi:10.1016/j.pcl.2012.12.001 - Pubmed citation