About: http://webisa.webdatacommons.org/380821024

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	Says Dr. Tom Clark, an epidemiologist with the CDC, ???Immunity wears off, especially for adults who are decades past their most recent vaccination.???
http://www.w3.org/ns/prov#wasQuotedFrom	shotofprevention.com