Cold sores, recurring painful lesions caused by the herpes simplex virus type 1 (HSV-1), affect about half of the U.S. population. The infection is highly contagious and can spread through close contact, even if no visible symptoms are present. While many individuals may not show signs after being infected, outbreaks can trigger with various factors. Prevention and proper treatment options are essential for managing these unsightly and uncomfortable sores, according to experts like Dr. Christine Johnston and Dr. Dean Blumberg.
The herpes virus is very contagious, and can be picked up through close contact, such as through kissing or sharing food, making it difficult to know who is contagious.
Roughly half of people in the United States have HSV-1, reflecting the widespread nature of this virus and its potential to cause recurrent cold sores.
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