Line for July 19, 2026

Earliest

1. 1
   Vaccine Hib disease

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

   Position 12345
2. 2
   Eradication rinderpest (a cattle disease)

   The last identified case of rinderpest, the second disease ever eradicated

   Position 12345
3. 3
   Vaccine measles

   An improved, weaker measles vaccine goes into use

   Position 12345
4. 4
   Vaccine hepatitis B

   The first hepatitis B vaccine is licensed in the U.S.

   Position 12345
5. 5
   Campaign measles

   Measles becomes a disease U.S. doctors and labs must report

   Position 12345

Latest

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