🦠microbiology review

Sexually transmitted infections

Written by the Fiveable Content Team • Last updated September 2025
Written by the Fiveable Content Team • Last updated September 2025

Definition

Sexually transmitted infections (STIs) are infections primarily spread through sexual contact. They can affect the urogenital tract and other parts of the body.

5 Must Know Facts For Your Next Test

  1. STIs can be caused by bacteria, viruses, fungi, or parasites.
  2. Common bacterial STIs include chlamydia, gonorrhea, and syphilis.
  3. Viral STIs include human immunodeficiency virus (HIV), herpes simplex virus (HSV), and human papillomavirus (HPV).
  4. Some STIs are asymptomatic but can still be transmitted to others and cause severe complications if untreated.
  5. Preventative measures include condom use, vaccination (e.g., HPV), and regular screening.

Review Questions

"Sexually transmitted infections" also found in: