Covid-19 vaccine has sparked a huge police probe in Edinburgh.A single multi-dose vial of the vaccine was swiped from a vaccination centre at the city's Morrison Street on Saturday morning.Officers say the callous theft was an 'isolated incident' and that they are 'following a positive line of enquiry'.Locals are being warned of scammer vaccinators as police urge anyone offered a vaccine outside a vaccination centre to get in touch.Chief Inspector Neil Wilson said: "We were made aware of an