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
Pandemic are caused by- 
Select and explain. 
A. Hepatitis B, B. Influenza-A, C. Influenza-B, D. Influenza-C
B: Influenza-A
Answer: B: Influenza-A 
Explanation: Ans. is 'b i.e., Influenza-A Pandemic --> Influenza, cholera Eltor, Acute hemorrhagic, Conjuctivitis. Epidemic --> Measles, Chickenpox, Cholera Endemic --> Hepatitis A, typhoid fever Sporadic ---> Polio, Tetanus, Herpes zoster, meningococcal meningitis.