Virus whose nucleic acid core is made up of DNA are called DNA virus. Virus DNA can be single-stranded or double-stranded.
Single-stranded DNA virus: ϕX174 and M13 coliphage viruses of the family Parvoviridae.
Double-stranded DNA virus: vaccinia, variola, adenoherpes simplex, T2, TIV (Tipula Iridescent Virus) etc.