BLOOD CARDIOVASCULAR SYSTEM LYMPHOID ORGANS
LYMPH NODES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What do smallpox and polio have in common?
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They are caused by bacteria
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Vaccines have dramatically reduced the number of people who catch them
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They mutate frequently
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They have been completely wiped out by vaccines
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Explanation:
Detailed explanation-1: -Historically, the vaccine has been effective in preventing smallpox infection in 95% of those vaccinated. In addition, the vaccine was proven to prevent or substantially lessen infection when given within a few days of exposure.
Detailed explanation-2: -The U.S. Food and Drug Administration (FDA) has licensed ACAM2000®, (Smallpox [Vaccinia] Vaccine, Live), a replication-competent vaccine, for active immunization against smallpox disease in persons determined to be at high risk for smallpox infection.
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