Lar haplotype assays (BioTest ABC SSPtray; BioTest Diagnostics Corp, Denville, NJ). Vaccinia-specific CD8 T-cell IFN and MIP-1 production was by flow cytometry measured using stimulation with live vaccinia virus (NYCBH strain) at an MOI of 5 as described by Precopio et al [18]. ELISPOT assays were performed utilizing MabtechTM ELISpot plus Human Interferon-gamma kits (MABTECH AB, Sweden). Cryopres