Sexually transmitted infections STIs usually pass from one person to another through sexual contact. Most are fairly common, and effective treatment is available — especially in the early stages. HIV has other routes of transmission. For example, this STI can spread through the use of unsterilized drug needles as well as sexual contact. Many STIs can spread through nonpenetrative sexual activity.
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Sexually Transmitted Diseases STD are illnesses that have a main mode of transfer by means of sexual behavior, which may include vaginal intercourse, oral sex, or anal sex. Stem the tide of the opioid epidemic. Increase access to health care. Provide high-quality supports and protections to vulnerable Pennsylvanians. You may be trying to access this site from a secured browser on the server. Please enable scripts and reload this page.
A sexually transmitted infection STI affects both men and women, and is passed from one person to another during sex or intimate contact. You can call and speak to a registered nurse anonymously anytime, every day of the year. Top of the page Check Your Symptoms. Aside from colds and the flu, sexually transmitted infections STIs are some of the most widespread infections in the world. STIs affect both men and women, and almost half of all STIs occur in people younger than 25 years old. Exposure to an STI can occur any time you have sexual contact with anyone that involves the genitals , the mouth oral , or the rectum anal. Exposure is more likely if you have more than one sex partner or do not use condoms. Some STIs can be passed by nonsexual contact, such as by sharing needles or during the delivery of a baby or during breastfeeding.
Back to Sexual health. Oral sex is the stimulation of the genitals using the mouth and tongue. It is one of the ways that sexually transmitted infections STIs are most frequently passed on.