More Common Than You Might Think is Elite Daily's celebration of STD Awareness Month. The Centers for Disease Control and Prevention (CDC) estimates that nearly 20 million new infections occur every year in the United States, and half are among people aged 15-24. In other words, STDs and STIs are way more common than you might think, even if the stigma of having one can feel isolating. But the first step to taking control of your sexual health is to educate yourself, so take a deep breath and scroll down.