From album Moderator's Photos
Wild poliovirus type 1 and Circulating vaccine-derived poliovirus cases
- See more at: http://www.polioeradication.org/Dataandmonitoring/Poliothisweek.aspx#sthash.o1UpAO3m.dpuf
20 October 2015
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8 years ago
- See more at: http://www.polioeradication.org/Dataandmonitoring/Poliothisweek.aspx#sthash.o1UpAO3m.dpuf
