Smallpox eradication was successful due to all of the following reasons except
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
Subclinical cases did not transmit the disease
A highly effective vaccine was available
Cross-resistance existed with animal pox
Infection provided lifelong immunity