(Reuters) A Missouri man was arraigned Thursday on charges that he recklessly infected a sexual partner with the virus that causes AIDS, and a prosecutor said he potentially could have infected 300 more people in two states.

David Mangum, 37, faces a felony charge in Stoddard County Circuit Court in southeastern Missouri accusing him of exposing a 29-year-old man to human immunodeficiency virus (HIV), which causes a life-threatening failure of the immune system commonly known as AIDS, according to court documents.

As well, Mangum admitted to having unprotected sex with more than 300 partners in Missouri and Texas since learning he was HIV positive in 2003, some of whom he had met through ads on the Craigslist Internet site, the court documents said.

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