Lessons from smallpox eradication campaign in Bihar state and in India

Area of Science:

• Public Health
• Epidemiology
• Infectious Disease Control

Background:

• The global smallpox eradication program achieved critical advancements in the mid-1960s.
• These included a heat-stable vaccine, effective bifurcated needle delivery, and a shift from mass vaccination to active case search and containment.

Purpose of the Study:

• To detail the successful intensified smallpox eradication campaign in India from 1973-1975.
• To highlight the strategies, challenges, and lessons learned during this unprecedented public health achievement.

Main Methods:

• Implementation of an intensified smallpox eradication campaign utilizing active case search and containment strategies.
• Deployment of national and international epidemiologists and mobile containment teams led by medical interns.
• Focus on specific regions, notably Bihar, where the last indigenous case occurred.

Main Results:

• Successful eradication of smallpox in India between 1973 and 1975.
• The last indigenous case was recorded on May 17, 1975.
• The campaign was recognized as an unprecedented achievement in public health history.

Conclusions:

• Sustained efforts by dedicated professionals were crucial for success.
• The campaign yielded significant lessons in campaign refinement, personnel support, flexible funding, public-private partnerships, and communication.
• Political commitment and international support were vital components.