Assertion: pid's pid | /r/HasProperty | silent epidemic
Facets:
value: often
type: TEMPORAL
Source sentences:
text: PID is referred to as the “silent epidemic” because it can have mild or no symptoms and often goes unrecognised by women and their doctors.
text: PID is often referred to as a ‘silent epidemic’ because in many cases women can have an infection without having any signs or symptoms –