146 laboratories testing 200 000 samples proving polio is 99.99% gone. Proof that #VaccinesWork! #EndPolio
Day 4 - Post 14 Video (WHO)
Day 4 - Post 14 Video (GPEI)
146 laboratories testing 200 000 samples proving polio is 99.99% gone. Proof that #VaccinesWork! #EndPolio
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