A U.S. Navy veteran had no idea he was living with the virus that causes AIDS for more than two decades, because government health care workers never informed him of his positive test result in the mid-1990s, he says.In a federal lawsuit filed this week, the South Carolina man says he ended up with “full-blown AIDS” because he never received treatment after being kept in the dark.“The treatment he's getting now is effective, but he’s had essentially 25 years of wear and tear for having no treatment," said his lawyer, Chad McGowan.