The 'hotspots' where Covid cases have doubled - and the neighbourhoods with fewer than three positive tests Areas of concern were peppered across the conurbation in the latest count, although Bury and Bolton seem to have taken a particular hit with increasing case numbers Updated Covid cases have doubled in some neighbourhoods in Greater Manchester - while other areas have returned just three positive tests over the course of a week. Infection rates on the whole have been heading in the right direction in the region, but some areas have become stubborn and troubling hotspots in the latest round-up of positive tests.