My boyfriend had the norovirus last monday i didn't catch it because i was away but i come back today its been a week is he still contagious?

...: Norwalk viruses are found in vomit and stool. You can get it by eating/drinking contaminated products, touching contaminated things, having direct contact with a person who is infected. People are contagious from when they begin feeling sick until at least 3 days after they are better. Wash hands often, avoid food prepared by someone infected and clean contaminated surfaces often.

Yes: Virus is present in the stool for up to 3 weeks after symptoms have resolved.