Table 3.

Comparison of HGE serology by IFA with three antigen sources

Isolates compared and patient no.Discrepant specimens (time after onset of symptoms)aTiter to the following antigen:
MRKWebsterNY-13
NY-13 vs MRKb
 3Convalescent phase (4 mo)<80640
 8Convalescent phase (11 mo)160<80
 9Convalescent phase (4 mo)<802,560
 9Convalescent phase (7 mo)<80640
NY-13 vs Websterc
 1Convalescent phase (14 mo)320<80
 7Baseline640<80
 11Baseline80<80
 11Convalescent phase (8 days)<802,560
 15Baseline<80320
  • a Discrepant indicates qualitative disagreement (positive or negative).

  • b Forty-four specimens were tested. Results were concordant (qualitative agreement [positive or negative]) for 40 specimens (90.9%).

  • c Twenty-seven specimens were tested. Results were concordant for 22 specimens (81.4%).