In the early years of the HIV epidemic many states legislated laws that criminalized potential HIV exposure.  A recent analysis conducted by CDC and the Department of Justice found  that there are 67 laws specific to people living with HIV enacted in 33 states.  These laws are specific to people that know their status and penalize them for potentially exposing others.  From state to state these laws vary by the specific behavior that can punished and the severity of the penalty.  Many have argued that most of these laws were put on the books before clinical trials demonstrated that  antiretroviral therapy reduces the risk of transmission.  Nor many of these laws take into account measure to prevent transmission.  The article  published in the March 15, 2014 issue of AIDS and Behavior is intended to serve as guide for state law makers to examine their laws and consider if these laws continue to serve their intended purpose.

Map of HIV exposure laws:

http://www.cdc.gov/hiv/policies/law/states/index.html

Link to the full article:

http://link.springer.com/article/10.1007/s10461-014-0724-0/fulltext.html