“ If the smallpox virus were released today, the majority of the world’s population would be defenseless, and given the virus ’ 30 percent kill rate, nearly two billion people could die. ” ​ — Foreign Affairs magazine.
وإلى ان يدرك العاملون في مجال الصحة ما يجري ،‏ يكون الوبأ قد تفشى في مدن بكاملها » .‏ —‏ مجلة ساينتفيك امريكان .‏