Do lysogenic viruses only infect bacteria?
Bacteriophages are the only viruses where this phenomenon is called lytic and lysogenic cycle. There is a similiar phenomenon in humans (and other mammals as well) which is called "endogenous retrovirus" and is pretty common.
For humans, there are estimations that something between 5 and 8% of the human genome are made of endogeneous retroviruses. See these two references:


Long-term reinfection of the human genome by endogenous retroviruses.
Endogenous Retroviruses and Human Evolution


Otherwise I can recommend reading the article on "Endogeneous retroviruses" in the Wikipedia, it is pretty extensive and has a lot of references.