XDR-TB: More Important than Human Rights?

The BBC posted an article today about the spread of extremely drug-resistant tuberculosis in South Africa, a nation with high rates of HIV infection. Authorities there are recommending detaining patients diagnosed with XDR-TB in an effort to prevent further transmission of the disease, which is doubly dangerous to patients with compromised immune systems. Though I certainly advocate for putting the health of the nation as a whole above the rights of the individual, I wonder if we as a society will recognize when we've gone too far, sacrificed too much freedom. There's no real third party to appeal to when we start trading health for liberty, no one to tell us when to stop.