pub too often after alarm at a rise in coronavirus cases.Around half of the latest positive cases of Covid-19 were among people in their 20s and 30s.First Minister Nicola Sturgeon said the levels are a reason for caution, while other parts of the world have also seen infection rates among young people surge.At a coronavirus briefing on Friday, Sturgeon said "nobody can safely get Covid", despite the disease causing more fatalities among older people.Urging people to "stick rigidly" to the latest