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Which of the following causative agents causes the disease 'kala-azar'?
The correct answer is Protozoa.Kala Azar, also known as Leishmaniasis, is a parasitic disease caused by protozoa.The causative agent of kala-azar is Leishmania donovani.Kala-azar is transmitted through the bite of an infected sandfly.Scientific name of sandfly is phlebotomus.Thereby the kala-azar is transmitted by phlebotomus.Additional InformationSome examples of infectious diseases and their agents are given below.DiseasesCaused byInfluenzaVirusSmallpoxVirusGerman measlesVirusTuberculosisBacteria Whooping coughBacteriaCholeraBacteriaTyphoid feverBacteriaAthlete's footFungi
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