First Minister said she could not rule out a link between transmissions rising and the limited reopening of primary schools in recent weeks.But she welcomed "significant evidence" which proved the success of the on-going vaccination programme in reducing deaths and illness caused by coronavirus.There were 4,009 confirmed cases of Covid-19 during the last seven days as of Sunday - up from 3,529 cases in the week previous.Chief medical officer Dr Gregor Smith said today he was "not overly concerned" by the slight uptick in cases.It comes as primary schools reopened to all pupils from today, with the First Minister due to give more information on lockdown easing in the months ahead when she updates MSPs at Holyrood tomorrow.Sturgeon said: "It.