How can M Bovis be eradicated?

What's behind the Government's decision to try and eradicate the disease rather than manage it as an ongoing presence in NZ farming? Prime Minister Jacinda Ardern says there is a window to attempt the bold move at a cost of about 886-million-dollars, but there can be no guarantees. Richard Laven from Animal Health, at Massey University's School of Veterinary Science, has been involved with the industry working group advising MPI since the beginning of the outbreak.