I think this is a decent and fair analysis, mostly. The one thing I'd like to know more about though is whether any kind of new vaccine is really worth developing.
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The problem with vaccines is diseaes can and do mutate. As stated, smallpox has not been completely irradicated. The problem with many drug companies is they don't want to invest the time/money to develop vaccines of which the may never recoup the investment that goes into developing them. There are other more proffitable avenues for revenue.
As a hedge against the possiblity of a mutated strain of smallpox creating a world pandemic, I'd rather err on the side of public safety. Look how devasting smallpox was before we had mass international travel. It could be horrific if it regained the opportunity to kill millions of people.
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