bTB study in Cheshire

[PostHarvest]

Interesting to see that of 48 road killed badgers taken in for testing in Cheshire, 15% of them were positive for bTB. The final percentage may be higher as I understand that some test results have not yet been finalised. But if there is at least 15% infection rate in an Edge area, what is the rate of infection in a High Risk area or a hot spot? I realise that road killed animals are more likely to be infected as they may not be fit enough to avoid cars, but I think its useful information.
Why was no similar data released after last years culls in the West Country?