The number of coronavirus cases linked to the 2 Sisters factory in Coupar Angus has risen to 199.
Figures released by NHS Tayside on Monday afternoon show that 173 staff have tested positive, along with 26 of their contacts.
It is a rise of 11 cases since Friday evening.
The factory has been closed for two weeks, since the first handful of cases was detected.
Staff returned for training on Monday morning, with production expected to restart on Tuesday.
Dr Emma Fletcher, Associate Director of Public Health and the Chair of the Incident Management Team, said: “I would like to thank all of the 2 Sisters factory workers and their families for complying with the self-isolation advice, which is so important in preventing further transmission of the virus in the community.
“The IMT considered the risk assessments and were satisfied that the factory should be able to reopen from today, Monday, August 31.”
She added: “The majority of staff will be able to return from today, however, those who have tested positive, or have been identified as being in contact with a positive case, must follow the specific self-isolation guidance they have been given and not return to work until their period of isolation is over.”
