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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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Small pox eradication was successful because of all except -
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The correct answer is  <p> Cross-resistance existed with animal pox. Epidemiological reason for smallpox eradication are No known animal reservoir, no long term carrier state,infection provides life long immunity,case detection simple due to characteristic rash,subcliical cases did not transmit the disease,a highly effective vaccine was available,internationalcooperatio. Reference:Park&;s textbook of preventive and social medicine,K.Park,23rd edition,page no:143. <\p>