pre-exposure prophylaxis

Noun

 * 1)  A form of prevention, usually medication, that is taken before exposure to a pathogen, preventing development of disease after such exposure.
 * 2)  A preventative medical regimen of HIV medicines used to protect against HIV seroconversion after an exposure.
 * 1)  A preventative medical regimen of HIV medicines used to protect against HIV seroconversion after an exposure.