Changes

Susceptibility to smallpox is based to a large degree on ethnic heritage.  [[Europe]]ans were plagued by it for many years and built up a resistance, whereas native [[American ]]populations were decimated when European explorers reached the Americas, almost causing extinction in many areas.

Susceptibility to smallpox is based to a large degree on ethnic heritage.  [[Europe]]ans were plagued by it for many years and built up a resistance, whereas native [[American ]]populations were decimated when European explorers reached the Americas, almost causing extinction in many areas.

The last case of smallpox occurred in 1977.  It is tacitly acknowledged that the [[United States]] and [[Russia]] each have stores of the otherwise eradicated virus.  It is not known if other rogue states, such as [[North Korea]], may also have stores.  Because of the relative danger of the vaccine, and the eradication of the illness through vaccination programs, it is not felt that vaccination should be resumed, despite the possibility of the virus's use as a bioweapon.  First responders are sometimes vaccinated.

Smallpox was eradicated through a mass vaccination program undertaken by the World Health Organization, and the last case of smallpox occurred in 1977.  It is tacitly acknowledged that the [[United States]] and [[Russia]] each have stores of the otherwise eradicated virus.  It is not known if other rogue states, such as [[North Korea]], may also have stores.  Because of the relative danger of the vaccine, and the eradication of the illness through vaccination programs, it is not felt that vaccination should be resumed, despite the possibility of the virus's use as a bioweapon.  First responders are sometimes vaccinated.