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