Line for April 17, 2026

Earliest

1. 1
   Treatment bacterial infections

   A Nobel Prize for penicillin "and its curative effect"

   Position 12345
2. 2
   Discovery rubella

   Rubella is described as a disease of its own ("German measles")

   Position 12345
3. 3
   Vaccine malaria

   WHO recommends the first malaria vaccine for wide use in children

   Position 12345
4. 4
   Elimination polio

   The last case of wild polio acquired in the United States

   Position 12345
5. 5
   Discovery diphtheria

   The diphtheria bacterium is first seen under the microscope

   Position 12345

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