The viral loads of MneHV-6 (A, B) and MneHV-7 (C, D) were determined from DNA isolated from the cell fraction of whole saliva (A, C) and from DNA isolated from oral swabs (B, D) collected at the same time point from two pig-tailed macaques (M03240 and M02298) using the MneHV-6 and MneHV-7 qPCR assays in duplicate. Viral loads are expressed as viral genome copies per cell, as described in Materials and Methods. MneHV-6 was not detectable in oral swab samples collected from either animal over the entire time period (B).