Vaccines - Definitions

Question 1

Inoculation (variolation)

Answer 1

Deliberately introducing a pathogen to a person who hadn’t already got the disease. The risk of dying is much lower for controlled exposure than naturally getting the disease.

Question 2

Vaccination

Answer 2

The deliberate, controlled introduction of modified versions of pathogens to induce immunity.

Question 3

The backfire effect

Answer 3

A phenomenon which describes a reinforcing the fact that occurs when people are presented with evidence that contradicts strongly held beliefs.