“ The epidemic is so widespread and so lethal that experts are comparing it to the Black Death that killed a quarter of Europe’s population in the fourteenth century. ” ​ — Reader’s Digest, June 1987.
द्वितीय विश्‍वयुद्ध के समय और उसके बाद संसार की स्थिति और अधिक ख़राब हो गयी ।