Apparently viruses divide in a human cell, because the human cell has substances that help it to divide (which are not present in the virus).. I think one of these substances would be the ribosome. Well each virus has a different way of using the cell machinery. But i will try to give a general understanding.. The virus enters.;. use the ribosome to translate (i think) the rna/dna instructions into structures that help to construct a new virus particle.
