The extent of the Counties Manukau District Health Board's building woes is greater than first thought. As RNZ News has been reporting, hospital buildings at Middlemore Hospital are full of rot and potentially dangerous mould. There's also asbestos present, and raw sewage leaking into the walls. The District Health Board has said it became aware in 2012 and 2013 it had four badly leaking buildings. But a leaked briefing shows many more buildings are affected. Tom Furley reports.