Rickettsia conorii
Rickettsia conorii is a Gram-negative , obligate intracellular bacterium of the genus "Rickettsia" that causes human disease called boutonneuse fever , Mediterranean spotted fever , Israeli tick typhus , Astrakhan spotted fever , Kenya tick typhus , Indian tick typhus , or other names that designate the locality of occurrence while having distinct clinical features . 
<triplet> Rickettsia conorii <subj> boutonneuse fever <obj> has effect <triplet> Gram-negative <subj> bacterium <obj> subclass of <triplet> Rickettsia <subj> Gram-negative <obj> Gram staining <triplet> boutonneuse fever <subj> Rickettsia conorii <obj> has cause