Table 5 shows that level of HIV knowledge among adolescents in this study was generally high, although there were still a good number of adolescents who did not agree or know HIV is a virus that attacks a person’s immune system (19.8%), the function of CD4 cells of fighting infection (38.1%), or the amount of HIV in a person’s blood is called viral load (51.2%). The gene discussed is CD4; the disease is infection.