SME
Grade 9 Science
Disease and the immune system
The main lesson, then each kind of problem it solves.
Disease and the immune system
Main lesson
Herd immunity
Use this for “Each case of a disease infects 5 people, and the vaccine works in 95% of people. What share must be vaccinated to stop it spreading?”
Kinds of pathogens
Use this for “Strep throat or the flu: which one can an antibiotic treat?”
The immune response in stages
Use this for “What do helper T cells do in the adaptive immune response?”
Innate or adaptive defense?
Use this for “Is a fever part of the innate or the adaptive immune response?”