HIV/AIDS!! PLZ HELP ANSWER THESE QUESTION!?

PLZ ANSWER THE FOLLOWING QUESTION PLZ, I WANT TO KNOW MORE ABOUT HIV/AIDS. THANK YOU!
hen donors contribute blood, it is now "HIV screened" before it is used in transfusion. What does this parsimonious and why is it being done?

2) What can young people do to protect themselves from infection next to HIV?

2.enjoy safe sex and get testes reguraly

3. so harmful things do not win out


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