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8 déc. 1963 - Albert Sabin (OPV)

Description:

The OPV is an oral vaccine that releases active viruses into the gut. It is a cheaper alternative to the IPV and does not need health officials to administer the vaccination.

Ajouté au bande de temps:

Date:

8 déc. 1963
Maintenaint
~ Il y a 61 ans

Les images: