TORONTO -- The City of Toronto has publicly named three companies that are dealing with a COVID-19 outbreak that they say poses a significant risk to public health.

According to Toronto Public Health, beauty brand DECIEM is facing an outbreak, as well at Sofina Foods Inc. and TTM Technologies Inc.

The public health agency did not release any specific details about the outbreaks or say the precise location of where they are occurring.

The three companies were named on Tuesday, a day after the City of Toronto announced it would start publicly exposing companies dealing with "sustained transmission" of COVID-19 in an effort to curb the spread of the disease.

"The criteria for disclosure include sustained transmission of COVID-19 in a workplace; where a significant proportion of staff have been involved in the outbreak; where there is significant duration of an outbreak and where the workplace is large enough that the risk of privacy concerns are mitigated," Toronto's Chief Medical Officer of Health Dr. Eileen de Villa said Monday.

In a statement to CTV News Toronto on Tuesday, Sofina Foods said they have been dealing with a COVID-19 outbreak since December.

To date, a total of 29 employees have been diagnosed with COVID-19, the company said. 

DECIEM told CTV News Toronto they are working closely with TPH to understand why the company has been listed as having an outbreak of the disease.

“Once we have this information, we may request for an amendement to the listing, as we believe that the statements made by TPH are misleading,” a statement issued by the company on Tuesday afternoon reads.

“We do not believe there to be any current internal spreading of COVID-19 at any DECIEM workplace, nor do we believe that DECIEM poses a significant public health risk.”

The statement said the company has declared all positive employee cases to TPH, “which we believe to have been contracted outside of the working environment.”

The company said 15 production employees are self-isolating at this time after receiving a positive COVID-19 test result.

In a statement, TTM Technologies Inc. said its employees, like much of the Toronto area, are experiencing heightened levels of positive COVID-19 cases.

“TTM’s first priority is the safety of its employees,” the statement said in part. “Beginning in March 2020, we instituted a company-wide pandemic preparedness and business continuity plan, which includes TTM’s Toronto facility.”

“No further information will be provided at this time while we focus on the safety of our workforce.”

According to the city, there are currently 16 COVID-19 outbreaks in community and workplace settings in the city.