Coupar Angus “will almost certainly grow” in the coming days.Pitlochry broadband off since August 12 stormShe said the Scottish Government was now treating cases tied to the George Street site as a “significant cluster” and revealed she was even considering imposing “restrictions” locally due to “the nature and potential scale” of the outbreak.Managers closed the factory at the start of the week and a mobile testing unit has been set up outside for workers to go and find out if they have the virus.Ms Sturgeon said: “In total, 43 cases have so far been identified as part of [the] outbreak - that is 37 people who work in the plant and six contacts of theirs.