If you mean STD'S <span>Bacterial STDs include chlamydia, </span>gonorrhea<span>, and syphilis. Viral STDs include HIV, genital herpes, genital warts (HPV), and </span>hepatitis B<span>. </span>Trichomoniasis<span> is caused by a parasite. The germs that cause STDs hide in semen, blood, vaginal secretions, and sometimes saliva.</span>