1. Personally, I think that the ability of humankind to destroy itself with nuclear weapons is generally overestimated. Of course, I would prefer these sorts of things be overestimated and not underestimated...
2. Once you light the fuse of that nuke, we actually know quite a bit about what happens next. If you were to release this virus, we know pretty much nothing about what happens next. Could be bad...but probably not as bad as you would expect.
3. You analogy would be more apt if you had said: "Here is naturally occurring uranium ore. Sometimes it can self-sustain short term nuclear reactions, but sometimes is spontaneously detonates and takes out a 100-mile area." See, that's the problem with the flu. Outbreaks will be bad, very bad, from time to time, but that's all thanks to Mother Nature. Part of the reason is simple numbers: 7bil humans x ?bil birds x ?x10^15 virus particles... What makes you think that humans can do worse?
2. Once you light the fuse of that nuke, we actually know quite a bit about what happens next. If you were to release this virus, we know pretty much nothing about what happens next. Could be bad...but probably not as bad as you would expect.
3. You analogy would be more apt if you had said: "Here is naturally occurring uranium ore. Sometimes it can self-sustain short term nuclear reactions, but sometimes is spontaneously detonates and takes out a 100-mile area." See, that's the problem with the flu. Outbreaks will be bad, very bad, from time to time, but that's all thanks to Mother Nature. Part of the reason is simple numbers: 7bil humans x ?bil birds x ?x10^15 virus particles... What makes you think that humans can do worse?