This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Social & Preventive Medicine
Which of the following is a zoonotic disease ? 
Select and explain. 
A. Hydatid cyst, B. Malaria, C. Filariasis, D. dengue fever
A: Hydatid cyst
Answer: A: Hydatid cyst 
Explanation: Ans. is 'a' i.e., Hydatid cyst Impoant zoonoses I. Bacterial -4 Anthrax, Brucellosis, Ornithoses, Q-fever, Leptospirosis, TB, Plague, Tularemia, Salmonellosis. 2. Viral --> Cowpox, Monkeypox, Easternequine, encephalitis, Ross river fever, Yellow fever, Japanese encephalitis, Lassa fever, Rabies. 3. Protozoal ---> Leishmaniasis, Toxoplasmosis, Trypanosomiasis, Babesiosis. 4. Helminthic ----> Clonorchiasis, Fasciolopsis, Schistosomiasis, Echinococus (hydatid disease), Taeniasis, Trichinellosis.