@BillGates: Today marks three years since Nigeria's last wild poliovirus case. This progress wouldn’t have been possible without the bravery of the young women who volunteer as polio vaccinators. https://t.co/Nmn2PoN5dv

http://twitter.com/BillGates

Today marks three years since Nigeria's last wild poliovirus case. This progress wouldn’t have been possible without the bravery of the young women who volunteer as polio vaccinators. https://t.co/Nmn2PoN5dv

— Bill Gates (@BillGates) August 21, 2019