<prompt> Weils disease is caused by?LeptospiraPlagueYersiniaRickettsial fever  <response>: ANSWER: A LeptospiraREF: Jawetzs 24th ed chapter 25Leptospira icterohaemorrhagiaeSource of Infection - Rat urine, waterDisease in Humans - Weils diseaseClinical Findings - Jaundice, hemorrhages, aseptic meningitisLeptospirosis is also known as Weils disease, Weils syndrome, canicola fever, canefield fever, nanukayami fever, 7-day fever, Rat Catchers Yellows, Fort Bragg fever, and Pretibial feverClassicactivationpathwayAntigerifantftxxfy immune complexClq-C1r-C1sMannose-bindinglectinactivation pathwayMicrobes with terminal manose groupsMBL-MASP1 -MASP2AlternativeactivationpathwayBacteria, fungi, vims, or tumor celtsC3 H2O 