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MPI is half way through the sixth (and final) round of bulk milk testing and Gwyn says the results will be sent out to farmers around mid-December.
Although Gwyn is quietly confident about progress so far nationwide, he is aware of the pressure that farmers in some areas are under as they tackle the cattle disease.
"We are still dealing with three particularly affected communities. For them the picture isn't so rosy.
"Places like Ashburton ... some 130 farmers going into Christmas with a regulatory control on their property which is not a good place to be."
Gwyn urges farmers to remain vigilant - "don't take the foot off the throat just because the results are going our way."
Also in today's interview: Geoff Gwyn defends MPI's under-fire compensation process.
Listen below: