TABLE 2.
HSV serostatus | Total Subjects (n) | Subjects with positive responses to: | |||||||
---|---|---|---|---|---|---|---|---|---|
HSV-2 | CEF | CMV | PHA | ||||||
n | % | n | % | n | % | n | % | ||
HSVneg | 35 | 2 | 6% | 22 | 63% | 7 | 20% | 35 | 100% |
HSV-1+/2− | 20 | 8 | 40% | 10 | 60% | 12 | 60% | 20 | 100% |
HSV-2+ | 26 | 22 | 85% | 18 | 69% | 19 | 73% | 26 | 100% |
PBMC from HSVneg, HSV-1+/2− and HSV-2+ subjects were screened by IFN-γ ELISPOT for responses to HSV-2 (34 overlapping peptide pools), CEF and CMV peptide pools and PHA. Responses were considered positive if the SFC in the experimental well (average of 2 wells) was 4 times the median SFC in the DMSO control wells and ≥55 SFC/106 PBMC.
IFN-γ ELISPOT positivity to the CMV peptide pool was consistent with CMV serostatus: subjects with positive IFN-γ ELISPOT responses to the pp65 CMV peptide pool were CMV seropositive and subjects with negative IFN-γ ELISPOT responses to the CMV peptide pool were CMV seronegative.