Final answer:
STIs are diseases transmitted through sexual activity and require routine testing for detection.
Explanation:
STIs (sexually transmitted infections) are diseases spread through sexual activity, including syphilis, gonorrhea, genital herpes, chlamydia, and HIV/AIDS. These infections can be transmitted through various sexual behaviors and even from mother to child. Routine testing for STIs is crucial, especially for sexually active individuals.
Learn more about Sexually Transmitted Infections here:
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