Recrudescent typhus

Recrudescent typhus, classically known as Brill-Zinsser disease, is a delayed, relapsing systemic infection caused by the reactivation of dormant *Rickettsia prowazekii* years or decades after an initial bout of epidemic louse-borne typhus It primarily affects adults or elderly individuals who previously resided in endemic areas or experienced untreated primary epidemic typhus, often reactivating during periods of physiologic stress, nutritional compromise, or waning cell-mediated immunity Patho...

Recrudescent typhus, classically known as Brill-Zinsser disease, is a delayed, relapsing systemic infection caused by the reactivation of dormant *Rickettsia prowazekii* years or decades after an initial bout of epidemic louse-borne typhus It primarily affects adults or elderly individuals who previously resided in endemic areas or experienced untreated primary epidemic typhus, often reactivating during periods of physiologic stress, nutritional compromise, or waning cell-mediated immunity

It primarily affects adults or elderly individuals who previously resided in endemic areas or experienced untreated primary epidemic typhus, often reactivating during periods of physiologic stress, nutritional compromise, or waning cell-mediated immunity

Pathophysiologically, the bacteria persist within host endothelial and reticuloendothelial cells, with reactivation producing a milder systemic vasculitis compared to primary infection

Pathophysiologically, the bacteria persist within host endothelial and reticuloendothelial cells, with reactivation producing a milder systemic vasculitis compared to primary infection Defining clinical features include acute fever, chills, severe headache, and malaise, occasionally accompanied by a transient, faint maculopapular rash, while serving epidemiologically as an interepidemic human reservoir capable of transmitting the pathogen to lice

Defining clinical features include acute fever, chills, severe headache, and malaise, occasionally accompanied by a transient, faint maculopapular rash, while serving epidemiologically as an interepidemic human reservoir capable of transmitting the pathogen to lice