Assertion: hepatitis b's infection | /r/HasProperty | based on clinical features of disease
Facets:
Source sentences:
text: Conducting surveillance for acute Hepatitis C on a nationwide basis has been difficult because a) no serologic marker for acute infection is available; b) cases are usually reported on the basis of a positive laboratory report and most health departments do not have the resources to conduct investigations to determine if these reports represent acute infection, chronic infection, repeated testing of a person who was previously reported, or a false-positive result; and c) it can be difficult to differentiate acute infection from exacerbation of chronic infection based on clinical features of disease.