About: http://webisa.webdatacommons.org/81464762

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	Although these efforts have yielded much success, challenges remain including lack of cross-neutralizing antibodies, poor induction of cellular immune responses, and inadequate duration of immunity.
http://www.w3.org/ns/prov#wasQuotedFrom	usda.gov