A teenager’s summer camping trip has put several regional NSW communities on high alert after he tested positive for the coronavirus. The 18-year-old visited the Berala BWS bottle shop in western Sydney, now the centre of a 15-strong COVID-19 cluster, on Christmas Eve. He then travelled with friends to the regional NSW towns of Orange, Nyngan and Broken Hill – almost as far as the state’s western border. The teen’s positive result came back on January 5. He’d first been alerted to the risk when received an alert from NSW Health about his bottle shop visit and developed a sniffle. Orange’s Birdie Noshery and Nyngan’s Riverside Tourist Park are now subject to health alerts, with more venues expected to be added to the list. The Berala cluster is the focus of an urgent investigation, with authorities unsure how a woman who visited the Woolworths next door, but not the BWS, …