The first infectious disease that has been eradicated is ( ). A: Measles B: Poliomyelitis C: Smallpox D: Chickenpox

Which of the following is the first infectious disease exterminated<br/>by human through vaccination? ( ) A: Smallpox B: poliomyelitis C: HCV D: SARS-CoV

During eradication of diseases, which disease was last seen in Somalia in 1977 AD? () A: Smallpox B: Chickenpox C: Poliomyelitis D: Malaria