Line for February 14, 2026

Earliest

1. 1
   Elimination polio

   The last case of wild polio acquired in the United States

   Position 12345
2. 2
   Campaign tuberculosis

   March 24 is recognized as World TB Day, a century after Koch

   Position 12345
3. 3
   Discovery measles

   The measles virus is isolated in tissue culture

   Position 12345
4. 4
   Vaccine malaria

   WHO recommends the first malaria vaccine for wide use in children

   Position 12345
5. 5
   Elimination smallpox

   Smallpox is eliminated in North America

   Position 12345

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