While HIV is an issue, Fielding said the more pervasive problem was sexually transmitted diseases like chlamydia and gonorrhea. He said AIM notifies the Department of Public Health of about 15 new infections a week.
"These are serious problems," said Fielding.
The HIV case has not been officially reported to Cal/Osha or the Los Angeles Department of Public Health. Both plan on investigating the situation to prevent future incidents.
The Associated Press contributed to this story.