Assertion: acute q fever | /r/Desires | fourfold rise
Facets:
value: in cdc surveillance cases
type: OTHER
value: between one
type: OTHER
value: between paired serum samples
type: OTHER
value: in phase
type: TEMPORAL
Source sentences:
text: In CDC surveillance cases, in addition to clinical criteria, a confirmed acute Q fever from serological testing requires a fourfold rise in phase II IgG antibody titre between paired serum samples, one taken during the first week of illness and a second 3–6 weeks later, while a probable acute Q fever has laboratory-supportive results of a single IgG titre ⩾1:128 to C. burnetii phase II antigen by IFA.