Re: Question for the "anarchists" in the crowd.

That analogy is not accurate. It would be more like a guest in your house (Mary's immune system had ceased fighting the disease, effectively coming to a truce) used a sniper rifle to kill people in your neighborhood. It's his doing, but if you let him stay, it's your fault if he keeps killing.

How is an immune system giving up or being overpowered in any way like inviting someone in. It's not even a conscious act. If my intruder has me pinned down, it somehow makes him welcome and me liable?

A carrier's immune system is not overpowered (that leads to death of the host), it has made peace with the disease. It may not be a conscious act, but neither is digestion. That disease is now part of her body.

I don't think the concept of fault applies. The reality of the situation is that it is bad for the infected person to be around others until a solution is found, one way or another this problem will be dealt with. We see how the government dealt with it. It could be done better, but usually such decisions are made under uncertain conditions. Noone knows how infectious the disease is or the route by which it travels, etc. Ideally, symptomless carriers should be rewarded somehow.