What is the purpose of pre-exposure prophylaxis (prep)? to decrease the risk of contracting human papilloma virus (hpv) to reduce liver damage caused by hepatitis b to minimize symptoms associated with acquired immune deficiency syndrome (aids) to prevent the development of human immunodeficiency virus (hiv)

PrEP prevents the development and spread of HIV

to help prevent the development of human immunodeficiency virus (HIV)    

Explanation:

Pre - exposure prophylaxis is a oral pill  , which is consumed by people how are more likely to have HIV , i.e. , people with high risk of getting infected by HIV consume this pill daily .

Daily course of this pill is very effective in preventing the disease of HIV , with a success rate of 99% .

The pill is the composition of two medicines , i.e. , emtricitabine and tenofovir , which helps to reduce or completely eliminate the chances of HIV .