What are the most common viral and bacterial STD infections?

Viral sexually transmitted diseases (STDs):

1. Herpes Simplex Virus (HSV-1 and HSV-2): Causes oral herpes (cold sores) and genital herpes.

2. Human Papillomavirus (HPV): Linked to cervical, vulvar, vaginal, anal, and penile cancers, as well as genital warts.

3. Hepatitis B Virus (HBV): Transmitted through sexual contact and can lead to liver disease and liver cancer.

4. Human Immunodeficiency Virus (HIV): Causes AIDS and weakens the immune system, making individuals more susceptible to other infections and diseases.

5. Cytomegalovirus (CMV): Usually transmitted perinatally but can also be transmitted sexually and can cause serious infections in immunocompromised individuals.

Bacterial sexually transmitted diseases (STDs):

1. Chlamydia: Caused by the bacterium Chlamydia trachomatis, it often shows no symptoms and can lead to serious complications like pelvic inflammatory disease (PID), infertility, and eye infections if left untreated.

2. Gonorrhea: Caused by the bacterium Neisseria gonorrhoeae, it can affect various body parts, including the urethra, cervix, rectum, and throat. If untreated, it can cause severe health problems.

3. Syphilis: Caused by the bacterium Treponema pallidum, it goes through different stages with distinct symptoms and can cause significant health issues if not treated promptly.

4. Mycoplasma genitalium: A bacterium that can cause symptoms similar to chlamydia, including urethritis and cervicitis.

5. Trichomoniasis: Caused by the parasite Trichomonas vaginalis, it often causes symptoms in women but may not present any noticeable symptoms in men.