Line for February 5, 2026

Earliest

1. 1
   Vaccine measles

   An improved, weaker measles vaccine goes into use

   Position 12345
2. 2
   Vaccine Hib disease

   The first Hib vaccine is licensed in the U.S.

   Position 12345
3. 3
   Campaign Guinea worm

   Guinea worm is down to 14 human cases in a year

   Position 12345
4. 4
   Vaccine chickenpox

   The chickenpox (varicella) vaccine is licensed in the U.S.

   Position 12345
5. 5
   Elimination polio

   The last case of wild polio acquired in the United States

   Position 12345

Latest

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