"Zero Pox" folder, Brilliant Collection, Taubman Health Sciences Library, University of Michigan Library
The 15th Active Search was conducted throughout India from 27 January to 1 February 1975. This map was compiled from summaries of active search findings for the Palamau district in Bihar. Although reports from some villages and municipalities were not received, the epidemiologist was confident enough in the results to write "zero pox" at the top of the map.
Used by permission of the World Health Organization, 14 April 2014.