Awesome, not sure how much more you can do then killing seven deer a year. How do I know, I don't. Though the chart that HMW posted pretty strongly suggests that. The "how do you know" cwd game has been played to death on MS from all angles. We (especially us armchair biologists) don't know. How do I define an area? You said you hunt Branch County but close to Hilldale. Zero positives in Branch, Hillsdale, Calhoun counties. If you want to play the CWD version of the six degrees of Kevin Bacon to get to the two Jackson positives, we can pretty much do the whole state, lol. Not trying to dog you. Like I said, if you're killing seven deer a year, you are doing your part and then some. JMO.