About: http://webisa.webdatacommons.org/353713332

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Not in the US nor Europe but several other countries use OPV, yes, especially Africa and that is why we see polio there.
http://www.w3.org/ns/prov#wasQuotedFrom	mothering.com