حسناً ، بعض العلماء يقدرون ما سيحدث لو أخذنا ٣٠٪ عينة عشوائية من ١٣٠٠ شخص و حصناهم
Well, some other scientists have estimated what would happen if you took a 30 percent random sample of these 1000 people, 300 people and immunized them.