As late as 1967, smallpox struck as many as 15 million people in 43 countries and killed an estimated two or three million. Experts now believe that the disease is on the verge of extinction. NOVA looks at the recent success of the World Health Organization's program to eradicate this disease, considered a triumph of western-styled medicine.
メンバーが意見を共有すると、レビューがここに表示されます。
音楽はまだありません
サウンドトラックを追加