Which is incorrect about smallpox?

A. The poxvirus called variola is the etiological agent.
B. The vaccine is effective even if given in the first few days after exposure.
C. There is an effective vaccine.
D. The last case was seen in 1977.
E. Transmission is by ingesting contaminated water or food.


Answer: E

Biology & Microbiology

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Indicate whether the statement is true or false

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