Brincidofovir (CMX001), the lipid-conjugated prodrug of Cidofovir (HY-17438) with long-acting antiviral effect, shows activity against a broad spectrum of DNA viruses including cytomegalovirus (CMV), adenovirus (ADV), varicella zoster virus, herpes simplex virus, polyomaviruses, papillomaviruses, poxviruses, and mixed double-stranded DNA virus infections.