Smallpox eradication was successful due to all of the following reasons except
Correct Answer: Cross-resistance existed with animal pox
Description: Epidemiological Reasons/Basis For Smallpox Eradication:
• No known animal reservoir
• No long term carrier state
• Infection provides lifelong immunity
• Case detection simple due to characteristic rash
• Subclinical cases did not transmit the disease
• A highly effective vaccine was available
• International cooperation
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Social & Preventive Medicine
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