MEDITERRANEAN SPOTTED FEVER Flashcards
cause
rickettsia conorri
moa
dog tick
epi
mediterranean
IP
4-10 days (1 week)
type of disease
zooinose
characteristic signs of the disease
a mp rash that classically spread to the palms and soles
distinct black eschar, , at the site of the tick bite(not painful or itchy)
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triad
tache noir, fever, rash
mb
obligate intracellular, gram -
symptoms
classically flu like symptoms
another name for disease
boutonneuse fever
diagnosis
serology
pcr
elisa
name of the tick
rhipicephalus sanguineus
examples of killed vaccines
HAV, POLIO, RABIES
live vacines so far
MMR, the OPV (polio vaccine)
intro
also known as boutennues (spotted or pimpled)
its endemic in the mediterranean region
has different names depending on where you find it such as marseilles fever
dx
The exanthem may be papulovesicular in some patients; this form is more common in adults in Africa. It may be challenging to differential this form from viral exanthems, particularly chickenpox.
dx
The exanthem may be papulovesicular in some patients; this form is more common in adults in Africa. It may be challenging to differential this form from viral exanthems, particularly chickenpox.
minority of patients
n a minority of patients, isolated lymphadenopathy is the only symptom. R conorii infection should be considered in patients with isolated lymphadenopathy who live in or have traveled to an endemic area, even when other more specific features are not present. In this setting, care should be taken to examine the area distal to the lymphadenopathy for an inoculation eschar, which, if present, can help support the diagnosis.
preventin
Patients should be educated about avoiding tick bites and minimizing contact with dogs in areas that are endemic with MSF.
diagnosis
Because there is no test that can reliably confirm MSF in its early stages, the diagnosis is commonly made on the basis of clinical findings. [25] The clinical diagnosis is supported when a history of travel to an endemic area is coupled with the following triad:
Fever
Exanthem (maculopapular rash)- non pruritic
Eschar (tache noire) at site of tick bite
epidemioligcal points
About 88% of MSF cases are diagnosed between June and September (as a reflection of the reproduction cycle of Rhipicephalus); however, physicians should be aware that climate changes are leading to increases in the number of off-season MSF cases