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Symptoms of some sexually transmitted infections may include small, painful blisters, ulcers, sores, intense itching, burning during urination, abnormal discharge, swollen lymph nodes, and discomfort in the genital area. However, not everyone experiences the same symptoms.
For example, some infections can remain completely asymptomatic for a long time. This means that a person can transmit the disease without knowing they have it. This characteristic makes STIs a major challenge for public health systems.