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More STD cases recorded in 2016 than ever before

The bacteria which causes chlamydia, the most prevalent STD in 2016. Photo: CDC via AP

The Centers for Disease Control and Prevention recorded over 2 million cases of STDs in 2016, the highest-ever number. The most prevalent disease, with 1.6 million cases, was chlamydia, followed by gonorrhea, with 470,000 cases.

Why it matters: The number of reported cases is on the rise. There were 4.7% more cases of chlamydia in 2016 than 2015, and an 18.5% increase in gonorrhea during that time period. Cases of syphilis, which are much less prevalent than chlamydia or gonorrhea, saw a 17.6% bump from 2015 to 2016.