Pre-exposure Prophylaxis is a preventive method against HIV infection.
Step-by-step explanation:
This can be taken orally as pills. People who are under high risk of IV infection can take the pill regularly to prevent infection.
If someone gets exposed to HIV either through sex or injection the pill can help by preventing a permanent viral infection. Protection offered can be maximised by ensuring the daily intake of the pill.
It prevents infection through sex by 99%. 77% percentage of the infection through injection can be prevented by this method.