https://www.cdc.gov/hiv/policies/law/states/exposure.html
In 24 states, laws require persons who are aware that they have HIV to disclose their status to sexual partners and 14 states require disclosure to needle-sharing partners. Twenty-five states criminalize one or more behaviors that pose a low or negligible risk for HIV transmission
More Info
http://www.americanbar.org/publications/human_rights_magazine_home/human_rights_vol38_2011/human_rights_spring2011/sex_and_hiv_disclosure.html
