Which disease has been totally eradicated from the world because of effective vaccination?
Correct answer: C. Small pox
- A. Measles
- B. Polio
- C. Small pox
- D. Hepatitis
Explanation
Smallpox was eradicated worldwide through an effective coordinated vaccination programme, and the World Health Organization declared eradication in 1980. Polio has been eliminated from many regions but has not been eradicated globally, so it is the likely alternative students choose. Measles and hepatitis also remain present in the world.
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About Viruses
Viruses are acellular infectious particles made of genetic material enclosed by a protein capsid, sometimes with a lipid envelope. Their replication depends on a host cell and may follow lytic or lysogenic cycles, so viral structure and reproduction differ fundamentally from those of cellular organisms such as bacteria.
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