Which is caused by Rickettsia:
Option 1 - Weil's disease is caused by Leptospira. Option 2 - Rocky mountain spotted fever is caused by R. rickettsia and transmitted by tick. This tick is also known as dermacentor andersoni . Option 3 - Scrub typhus is caused by Orientia tsutsugamushi. Option 4 - Lymes disease is caused by Borrelia burgdorferi.
Weil's disease
Rocky mountain spotted fever
Scrub typhus
Lymes disease
Systemic Bacteriology (Haemophilus, Yersinia, Spirochaetes, Ricketssia, Chlamydia, Mycoplasma and Miscellaneous Bacteria)