This 1975 image depicted a local Bangladesh smallpox eradication team volunteer questioning a community child, and entering the discussion data into the 'Containment Book'. The keeping of detailed records was extremely important, and is one of the hallmarks of properly practiced epidemiologic science. Smallpox cases that were uncovered had to be followed to a successful outcome, as well as anyone associate with close contact with any confirmed smallpox case. No matter even if it was a single case, all such disease was treated as an emergent situation, and once located were documented and tracked using methods such as 'mapping'.
CDC/ World Health Organization; Stanley O. Foster M.D., M.P.H.
November 27, 2012
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