@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

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@BillGates: There are few people I’ve learned more from over the years–especially about viruses–than Peter Piot. This Q&A with him is an excellent, easy-to-understand primer on #COVID19: https://t.co/dBntxKnybd https://t.co/R6M4fItYHU