Vaccination was discovered by: A) Galileo B) Edward Jenner C) Baird D) Roentgen Related MCQs: Vaccination was discovered by ……? The total distance from the school to house is 39 km. Abid covered a distance of 13 km What percentage of the whole distance has he covered? In MS Word 2016 which of the following shortcut key is used to use paste special? ?اضطرار کا متضاد کیا ہے