DNA polymerase that replicates the viral genomic DNA (Probable). Also incorporates 5-hydroxymethyl-2'-deoxyuridine (5-hmdU) instead of dTMP into DNA during replication, as an early step in the pathway of thymidine hypermodifications of the viral genome (PubMed:34522950). As a final result of the pathway of hypermodification, 5-aminoethyl-2'-deoxyuridine (5-NedU) substitutes for about 30% of thymidines in the viral DNA (PubMed:34522950, PubMed:29555775). These modifications probably prevent degradation of viral genome by the host restriction-modification antiviral defense system (PubMed:34522950). a 2'-deoxyribonucleoside 5'-triphosphate + DNA(n) = diphosphate + DNA(n+1) Belongs to the DNA polymerase type-A family. DpoZ subfamily.