Weil-Felix reaction Ir mmunolo gical group Type D isease 0x-19 OX-19++++ Classic European typhus 0x2+ Brils disease, OX-K Endemic murine typhus OX-K 0X-19 Tsutsugamushi disease 0x2 Scrub orrural typ hus OX-K++++ Sumatran mite fever Indeterminate 0x-19+ Spotted feversao Paulo 0x2+ typhus so uth African tick 0X-K+ fever, Kenya typ hus ndian tick typ hus north Asian tick typhus
Transmission Typhus, spotted fever and trench fever are transmitted via arthropod vectors aQ fever is acquired via inhalation or ngestion of contaminated milk or food
Transmission ◼ Typhus, spotted fever and trench fever are transmitted via arthropod vectors; ◼ Q fever is acquired via inhalation or ingestion of contaminated milk or food
Pathogenesis 沿a, Virulence factors endotoxin phospholipase A, and slime layer Sites: vascular system producing vasculitis血管炎 Characteristic triad of symptoms: fever, headache and rash(no rash with Q fever)
Pathogenesis ◼ Virulence factors: endotoxin, phospholipase A, and slime layer ◼ Sites: vascular system producing vasculitis血管炎 ◼ Characteristic triad of symptoms: fever, headache and rash (no rash with Q fever)