I actually never read the description. I guess it would have been required to understand the show more? I'm not sure if that's good writing, but it is what it is.

I thought the city where things have now been happening is not one huge quarantine zone, just a town. Still, it doesn't really explain the half-assed effort to get the terrorist action under control. Either you do it properly or don't do it at all. Since I thought it's just a town, it looks exceptionally strange the government wouldn't care at all, unless it was such a compromised government it would be no more two days later and the whole country would collapse, more or less. However, if the people of the quarantine zone know that nobody is going to protect them, why did they just die like lambs in the hands of the terrorists, as if they believed the government forces would be there to defend them? Kind of strange the terrorists were killing other infected, instead of recruiting them to boost their ranks.

Why I said that nobody gives a shit is because somehow mysteriously they expect that one amnesiac dude to find the cure. These days finding cures for diseases is typically a billion dollar effort by big corporations with whole teams of researches, often working together with university research groups, or vice versa, with a university research groups studying the issue and then medical companies cooperating to bring it to the masses if a medicine is necessary.