Efficacy of Azithromycin Plus Doxycycline Versus Doxycycline Plus Placebo in Patients With Rocky Mountain Spotted Fever
86 patients around the world
Available in Mexico
Rocky mountain spotted fever is a potentially fatal infectious disease wich is transmitted
trough vectors. This particular infection is caused by Rickettsia rickettsii wich is a
gramnegative intracellular bacilli. The pathophysiological mechanism and clinical
manifestation is mainly due to the vascular affectation, since this pathogen has a tropism
for endothelial cells. As it has been mentioned, this is an obligate intracellular pathogen,
so the main choice with the antibiotic therapy is tetracyclines because of its action
mechanism in the inhibition of the subunit 30S. The objective of the study is to prove new
strategies of treatment to improve the pharmacological aproach by implementing Azithromycin,
wich is a macrolide that inhibits de 50S subunit of the bacteria. Azithromycin has shown
effectivity against other rickettsial diseases.
Hospital General de Mexicali
86Patients around the world
Requirements for the patient
From 18 Years
All Gender
Medical requirements
Any gender
Over 18 years old
hospitalized in the internal medicine service, emergency department or intensive care unit of Hospital General de Mexicali (ISESALUD) or Hospital General Zona No. 30 (IMSS) with suspicion of RMSF that present fever and 2 or more of the next symptoms: headache, myalgia, rash, nausea, pharyngeal hyperemia, vomiting, abdominal pain, neurological disorders. In addition to at least one of the next epidemiologycal fators: presence of vectors in areas of residence or endemic areas visited two weeks prior to the onset of symptoms, history of visiting or residing in areas with RMSF transmission in the last two weeks, existence of confirmed cases in the locality of origin, history of vector bite or contact with dogs in the two weeks.
Other clinical suspicion rather than RMSF
History of allergy to doxycycline, azithromycin, bean starch or bovine gelatin.