One of the accusers, Quantasia Sharpton, told The New York Daily News that she and the entertainer had romped in her hotel room two years ago while she was celebrating her 19th birthday.
In a press conference on Monday, celebrity lawyer Lisa Bloom appeared with one of the plaintiffs, Quantasia Sharpton, a.k.a. Angel Valentino.
When she reached backstage, she was approached by Usher's security guard who asked for her contact number and revealed that the singer was interested in her. "He never warned me about any STDs".
Although Sharpton tested negative for the virus when she gave birth a year ago, she contacted the woman's lawyer, Bloom, hoping Usher will tell his partners if he has an STD.
Two accusers have opted to remain anonymous, one of whom has tested positive for the virus.
The Radar Online report evidently alarmed people who say they hooked up with Usher more recently.
"When I first heard reports that [Usher] had herpes, I couldn't believe it..."
Sharpton states that she felt violated by Usher's alleged omission of his health status and states that it was "unfair" for her to have to find out through the media regarding the issue.
"No one in America - even a popular celebrity - is above the law".
Neither Usher nor anyone else should be shamed or stigmatized for having herpes, but it's important that the truth about his diagnosis be ascertained, Bloom said.
"I am speaking out today on behalf of myself and others, some of whom are positive and are embarrassed to speak out publicly", she said.
Bloom said the encounters in the lawsuit occurred after an alleged 2012 settlement, reported on by RadarOnline in July.
The R&B vocalist is supposedly set to take his own legal route by suing the individuals alleging he exposed them to the sexually transmitted disease.
Since the lawsuit and the accusations have been made public, Usher has gone completely silent.