According to Deadline, the Los Angeles County Department of Public Health sent out the advisory to industry actors on 24 December.
The Independent has contacted the Los Angeles County Department of Public Health for more information.
On Monday, the Los Angeles County Department of Public Health reported 73 new deaths and 13,661 new Covid-19 cases, with an additional estimated 432 deaths reflecting delayed reporting.
Health authorities in Los Angeles have asked the entertainment industry to consider halting film, TV, and music productions due to a surge in coronavirus cases.