EVERYDAY SCIENCE

Detailed explanation-1: -The basis for vaccination began in 1796 when the English doctor Edward Jenner noticed that milkmaids who had gotten cowpox were protected from smallpox. Jenner also knew about variolation and guessed that exposure to cowpox could be used to protect against smallpox. To test his theory, Dr.

Detailed explanation-2: -Inorder to test his theory, Jenner injected a small dose of cowpox virus into a boy. Once he recovered, Jenner injected the boy with smallpox virus. He observed that the boy did not get the disease. This finding led to the discovery of the smallpox vaccine.

Detailed explanation-3: -1796. Dr. Edward Jenner finds that vaccination with the cowpox virus can protect a person from smallpox infection and creates a smallpox vaccine. He publishes his findings in 1798.

Detailed explanation-4: -Jenner, a country physician, invented vaccination with cowpox to replace the fearful dangers of inoculation with smallpox. This development resulted in immunity to smallpox and ushered in the era of preventive measures for contagious diseases (World Health News. May 1980).

Detailed explanation-5: -Edward Jenner (Figure 1) is well known around the world for his innovative contribution to immunization and the ultimate eradication of smallpox (2).