Why do women get vd

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Last updated: April 8, 2026

Quick Answer: Women can contract sexually transmitted diseases (STDs) through sexual contact with infected partners, with biological factors increasing their vulnerability. According to the CDC, in 2021, there were approximately 2.5 million reported cases of chlamydia, gonorrhea, and syphilis in the U.S., with women accounting for nearly half of chlamydia cases. Women often experience more severe health consequences from STDs, including pelvic inflammatory disease (PID), which affects about 1 million women annually in the U.S. and can lead to infertility. Regular screening and prevention methods like condoms are crucial, as many STDs are asymptomatic in women.

Key Facts

In 2021, the CDC reported 1.6 million cases of chlamydia in the U.S., with women comprising about 60% of these infections.
Gonorrhea rates increased by 28% from 2017 to 2021, with women at risk for complications like ectopic pregnancy.
Syphilis cases in women rose 147% from 2017 to 2021, contributing to congenital syphilis in newborns.
HPV (human papillomavirus) is the most common STD, with about 79 million Americans infected, and can cause cervical cancer in women.
Untreated STDs in women can lead to PID, which causes infertility in about 10-15% of affected women.

Overview

Sexually transmitted diseases (STDs), also known as sexually transmitted infections (STIs), are infections spread primarily through sexual contact, including vaginal, anal, or oral sex. Historically, STDs have been documented for centuries, with syphilis outbreaks noted in Europe in the late 15th century. In the modern era, the prevalence of STDs has fluctuated; for example, in the U.S., reported cases of chlamydia increased from 1.4 million in 2010 to over 1.6 million in 2021, according to the Centers for Disease Control and Prevention (CDC). Women are particularly affected due to biological and social factors, such as the structure of the female reproductive tract, which can make infections harder to detect. The term "VD" (venereal disease) is an older term largely replaced by "STD" or "STI" to reduce stigma and reflect broader transmission methods. Key organizations like the World Health Organization (WHO) report that over 1 million STIs are acquired daily worldwide, with women in low-income regions facing higher risks due to limited healthcare access.

How It Works

STDs are caused by pathogens like bacteria, viruses, or parasites that are transmitted during sexual activity. For women, infections often enter through the mucous membranes of the vagina, cervix, or urethra. Biological mechanisms increase women's susceptibility: the vaginal lining is more permeable than male genital tissue, and infections can ascend to the upper reproductive tract, leading to conditions like pelvic inflammatory disease (PID). Hormonal changes, such as those during menstruation, can also alter vaginal pH, making it easier for pathogens like Neisseria gonorrhoeae (gonorrhea) or Chlamydia trachomatis (chlamydia) to thrive. Many STDs are asymptomatic in women; for instance, up to 70% of chlamydia cases show no symptoms, delaying diagnosis and treatment. Transmission can occur from an infected partner, and some STDs, like HPV, can spread through skin-to-skin contact. Prevention methods include barrier protection like condoms, which reduce transmission risk by about 98% when used correctly, and vaccinations, such as the HPV vaccine introduced in 2006, which protects against high-risk strains.

Why It Matters

STDs have significant real-world impacts on women's health, contributing to long-term complications like infertility, chronic pain, and increased cancer risk. For example, untreated chlamydia or gonorrhea can cause PID, leading to infertility in about 10-15% of cases, which affects family planning and quality of life. In pregnant women, STDs can result in adverse outcomes such as preterm birth or congenital infections; syphilis, if untreated, can cause stillbirth or neonatal death in up to 40% of cases. Economically, STDs impose substantial costs: the CDC estimates that STDs cost the U.S. healthcare system over $16 billion annually in direct medical expenses. Beyond health, STDs carry social stigma, which can deter women from seeking testing and treatment, exacerbating disparities in access to care. Public health initiatives, like the CDC's STD Prevention Guidelines updated in 2021, emphasize screening and education to reduce transmission and improve outcomes, highlighting the importance of addressing STDs as a critical global health issue.