Yassa,
even though your statements are correct in theory,they may not prevail in practise.If we look at history and elephant breeding programmes.There were no TB tests in the past and zoo's in Europe and Nth America transfered as required.Treatment wasn't as available and elephants were euthanaised or died as a result.Even today elephants are transfered throughout Europe with limited testing and in essence the disease is circulating as we speak and I think that Taronga is qualified to deal with this issue and will follow current therapies and testing.It may be sometime before they are deemed TB free and this may be timely as there aren't enough places to cope with a future male population at present.I hope Taronga's herd survives this dilemma and continues to be a vital participant of the Australian elephant herd.