The U.S. porn industry has been put on hold amid rumours another actor has tested positive for Hiv.

An immediate and indefinite moratorium has been placed on all filming after the positive test.

Diane Duke, CEO of the industry's trade body The Free Speech Coalition, tells the Los Angeles Times that while they are still awaiting for confirmation test results, they are "taking every precaution to protect performers and to determine if there's been any threat to the performer pool".

She continues, "We take the health of our performers very seriously and felt that it was better to err on the side of caution."

It is the third time the porn industry has been forced to stop filming in the past year due to concerns over the spread of Hiv.

Last August (13), actress Cameron Bay learned she had contracted the disease, and the following month, three more adult actors tested positive for the virus. Both instances prompted the officials of the Free Speech Coalition to lay down the moratorium.

Filming resumed in late September (13), but new protocols were put into place which required actors to be tested every 14 days rather than every 28.