STD (sexually transmitted diseases):
STDs are a group of communicable diseases that are transmitted predominantly by sexual contact and caused by a wide range of bacterial, viral, protozoal & fungal agents and ecto-parasites.
Microorganisms causing STD:
| Classification | Pathogen | Disease or Syndrome |
A.Bacterial | 1. Neisseria gonorrhoeae | Gonorrhea, PID, urethritis, neonatal, conjunctivitis |
| 2. Treponema pallidum | Syphilis | |
| 3. Haemophilus ducreyi | Chancroid | |
| 4. Chlamydia trachomatis5. Calymmato bacterium granulomatis | PID, urethritis, neonatal conjunctivitis, granuloma inguinale | |
B.Viral | 1. Herpes simplex virus | Genital herpes |
| 2. Hepatitis B virus | Acute & chronic hepatitis, hepatocellular carcinoma | |
| 3. Hepatitis C virus | Acute & chronic hepatitis, hepatocellular carcinoma | |
| 4. HIV | AIDS | |
| 5. Human papilloma (HPV) | Genital & anal warts | |
| 6. Molluscum contagiosum virus | Genital Molluscum contagiosum | |
| C.Fungal | Candida albicans | Vaginitis (Moniliasis) |
D.Protozoal | Trichomonas vaginalis | Vaginitis |
| Giardia lamblia | Giardiasis | |
| Entamoeba histolytica | Amoebiasis | |
E.Ectoparasites | Sarcoptes scabiei | Scabies |
| Phthirus pubis | Pubic pediculosis |