Line for May 24, 2026

Earliest

1. 1
   Discovery hepatitis B

   The hepatitis B surface antigen is first described

   Position 12345
2. 2
   Treatment bacterial infections

   A Nobel Prize for penicillin "and its curative effect"

   Position 12345
3. 3
   Campaign measles

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

   Position 12345
4. 4
   Eradication rinderpest (a cattle disease)

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

   Position 12345
5. 5
   Vaccine pertussis

   The first whole-cell whooping cough (pertussis) vaccines are licensed in the U.S.

   Position 12345

Latest

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