Which was the most common STI up until 1990?

Name: Which was the most common STI up until 1990?
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Gonorrhea was the most common STI up until 1990. It was prevalent among young people and was easily spread through unprotected sexual contact. However, since the introduction of antibiotics, the rates of gonorrhea have decreased, and other STIs such as chlamydia and HPV have become more prevalent.

Which Was the Most Common STI Up Until 1990