About: http://webisa.webdatacommons.org/232171006

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	However, because pertussis presents like other common respiratory infections for the first few weeks, and because some patients may be asymptomatic, it can be difficult to make an initial pertussis diagnosis.
http://www.w3.org/ns/prov#wasQuotedFrom	ems-ceu.com