Leptospirosis - Usually contracted in a tropical region during flooding. 5 phases Incubation period of 5-14 days, Septicaemic phase (lasts approx. 1/52) , fevers, myalgia, conjunctival effusion.brief pause in symptoms (1-3 days) or development of Weil syndrome (renal failure/hepatic necrosis pulmonary dysfunction, bleeding diathesis), leptospiuria period -aseptic meningitis, renal failure, cardiomyopathy, pulmonary manifestations, uveitis. Treatment is Benzyl Penicillin, Ceftriaxone or Doxycycline - may precipitate Jarish-Herxsheimers reaction (riggers/shock/DIC)