WHO reports that the number of sexually transmitted infections has increased worldwide.

STIs, including syphilis, gonorrhea, increasing globally: WHO The World Health Organization (WHO) released a report Tuesday that found the number of sexually transmitted infections have increased around the world. ABC News ABC News

The number of sexually transmitted infections (STIs) around the world is increasing and is a "major concern" for health officials, according to a new report published Tuesday from the World Health Organization (WHO).

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