Line for January 25, 2026

Earliest

1. 1
   Discovery rotavirus

   Rotavirus is identified as a cause of diarrhea

   Position 12345
2. 2
   Vaccine measles

   An improved, weaker measles vaccine goes into use

   Position 12345
3. 3
   Eradication smallpox

   The last known natural smallpox case, in Somalia

   Position 12345
4. 4
   Campaign smallpox

   WHO starts a plan to rid the world of smallpox

   Position 12345
5. 5
   Elimination malaria

   WHO certifies malaria gone from the United States

   Position 12345

Latest

Lock in my order