Assertion: chronic q fever | /r/HasProperty | based antigen
Facets:
value: for probable cases
type: PURPOSE
value: to c. burnetii phase
type: TEMPORAL
value: for laboratory-supportive results
type: PURPOSE
value: by ifa
type: OTHER
Source sentences:
text: The CDC chronic Q fever can be based on clinical evidence with laboratory confirmation (IgG titre ⩾1:800 to C. burnetii phase I antigen by IFA) for confirmed cases or laboratory-supportive results (IFA IgG titre ⩾1:128 and <1:800 to C. burnetii phase I antigen) for probable cases.