Sexually transmitted diseases (STDs), also known as sexually transmitted infections (STIs), are caused by various infectious agents that are transmitted through sexual contact. The most common types of infectious agents that cause STDs include:
- Bacteria: Certain types of bacteria can cause STDs, such as chlamydia, gonorrhea, and syphilis. These bacteria can be transmitted through sexual contact with an infected person’s genitals, mouth, or rectum.
- Viruses: Several types of viruses can cause STDs, including human papillomavirus (HPV), herpes simplex virus (HSV), human immunodeficiency virus (HIV), and hepatitis B and C viruses. These viruses can be transmitted through sexual contact with an infected person’s blood, semen, vaginal fluids, or saliva.
- Parasites: Parasitic infections such as trichomoniasis can also be transmitted through sexual contact. Trichomoniasis is caused by a parasite called Trichomonas vaginalis and is usually transmitted through vaginal intercourse.
It’s important to note that STDs can also be transmitted through other means besides sexual contact, such as through sharing needles or syringes, from mother to child during childbirth or breastfeeding, and occasionally through skin-to-skin contact. However, sexual contact is the most common mode of transmission for most STDs. Practicing safe sex, using condoms consistently and correctly, and getting regular screenings are important steps to prevent the spread of STDs. If you suspect you may have an STD, it’s essential to seek medical advice and get appropriate testing and treatment.
