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1 jan 2004 ano - 80 million African children get polio vax in 23 days

Descrição:

In Africa, synchronized National Immunization Days in 23 countries target 80 million children, the largest coordinated polio immunization effort on the continent.

Adicionado na linha do tempo:

19 nov 2023
0
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350

Data:

1 jan 2004 ano
Agora
~ 21 years ago