Nike conference in Edinburgh did not spread the disease across Scotland, the country's chief medical officer has said.Dr Gregor Smith said today that efforts to contain the virus among those who attended the gathering at a city centre hotel in February appeared to have been successful.The outbreak in Edinburgh took place took place weeks before lockdown was implemented by the Scottish Government - but was only publicly revealed in May.Opposition politicians claimed there had been a "cover-up" and questioned why health bosses did not alert everyone who had passed through the hotel at the time.Speaking at the Scottish Government's daily media briefing, Dr Smith said contact tracing following the Nike conference appeared to have been.