While Los Angeles County public health officials announced last week that at least 16 unpublicized HIV cases among adult-film performers had been reported since 2004, they recently clarified that they do not know whether those individuals were active porn performers when they tested positive, the Los Angeles Times reports.

According to the article, the Adult Industry Medical Foundation (AIM)—a San Fernando Valley–based clinic that serves porn actors and actresses—now puts the total number of HIV cases reported since 2004 at 18, but health officials note that they have incorrectly labeled all of these cases from the clinic as adult-film performers. AIM was created for the porn industry, but it serves other clients.

“We have no information on these individuals,” said Jonathan Fielding, MD, the county's health officer. “All we have is the number from AIM.”

However, clinic cofounder Sharon Mitchell told the Times that none of those cases was an active performer.

“Here's the bottom line: We're an HIV testing center,” Mitchell said. “We don't just test the adult entertainment industry. We have a lot of people who come who want testing from the general public.”

The county health department revealed the unreported cases after an unnamed female porn star recently tested HIV positive.