Adult-film studios across the San Fernando Valley were asked to halt production Wednesday after a performer tested positive for HIV, a trade group for the industry announced.

The Free Speech Coalition, the Canoga Park-based trade group for the adult-film industry, made the announcement after consulting with Adult Production Health and Safety Services, a group of medical providers for the industry which they oversee.

“We are following established protocols,” said Diane Duke, executive director for the Free Speech Coalition, “for the protection of performers.”