Commonest trophozite infection by sexual intercourse -
Trichomoniasis has an estimated annual incidence of 173 million cases(Ref.PARK'S TEXTBOOK OF PREVENTIVE AND SOCIAL MEDICINE 21st Edition page no.304)
Entamoeba histolytica
Trichomonas vaginalis
Trepanoma palidium
Giabrdia intestinales
Communicable diseases