Measles cases in the USA (30 sept. 1944 – 28 mars 161829)
Description:
1944 couple thousands, 2000-6000
Lowered 1964 to 4000,5000
After second dose recommended went down 1988
Ajouté au bande de temps:
Date:
30 sept. 1944
28 mars 161829
~ 159990 years