Figure 4.

Metagenomic reads of mothers and their offspring mapped to a human herpesvirus genome. Three sample types, including vaginal (M.vag) of the mother, and oral (N.ora) and intestinal (N.mec) of the newborn from nine mother–infant pairs, were used. Sample types were assigned to different colors. The genome of one strain of human herpesvirus 7 (NC_001716.2) was selected as the reference. The number on the left represents the sequencing depth of each sample. All samples used are from neonates delivered vaginally and their mothers.