We (Americans) have done it before. With. One. Fucking. Bomb. Each. TIME.
Not to mention that, thanks to us, Bikini Island no longer exists. Thanks to us and the Hydrogen Bomb.
I'm pretty sure that both Hiroshima and Nagasaki are both still around.
Of course, if you pour enough nukes into any problem, it'll go away. Certainly with proper application of modern nuclear weapons you could completely destroy a city, you'd also irradiate half the planet, so it's not exactly the ideal solution.
Not to mention Rotters and Runners would be immune to the Radiation, 3rd Degree burns, and the Lions Share of the Debris that hit them. That was what caused the serious causalties in Hiroshima and Nagasaki,More or less any zombie that escaped being vaporized or being flung in a way that caused it's head to be smashed open.
TABLE A: Estimates of Casualties
__________________Hiroshima Nagasaki
Pre-raid population 255,000 195,000
Dead____________ 66,000 39,000
Injured__________ 69,000 25,000
Source:
http://www.atomicarchive.com/Docs/MED/med_chp10.shtmlOut of 255,000 people in Hiroshima, 66,000 died. That's roughly 4 people alive for every 1 killed. If we're talking about Zombies here, you can likely cut that 66,000 by a forth. And that's being generous.