These are commonly spread by sex, especially vaginal intercourse, sodomy and head . Most STDs initially don't cause symptoms. There are quite 20 sorts of sexually transmitted diseases; those include Chlamydia, Gonorrhea, herpes genitalis , HIV/AIDS, HPV, Syphilis, and Trichomoniasis. STDs affect men and ladies of all ages and backgrounds, including children. People can pass STDs to sexual partners albeit they themselves don't have any symptoms. Cervical Cancer: Open Access, Journal of Carcinogenesis & Mutagenesis, Journal of HIV & Retro Virus, Journal of Infectious Diseases & Therapy, Journal of Clinical & Experimental Oncology, Journal of Sexually Transmitted Diseases, Cancer Immunology and Immunotherapy, Current Opinion in HIV and AIDS, International Journal of STD & AIDS, Sexually Transmitted Infections - BMJ Journals, Indian Journal of Sexually Transmitted Diseases and AIDS.