(a)[2]
Draw a line from each transmissible disease to the pathogen type that causes it.
(b(i))[3]
When the cholera pathogen is inside the small intestine it produces a [BLANK]. This causes [BLANK] ions to be secreted into the small intestine. The water potential inside the small intestine will [BLANK], causing water to move into the intestine.
(b(ii))[2]
If the project is successful, calculate the maximum number of cholera deaths in 2030.
(b(iii))[4]
Describe how vaccination can make people immune to a disease.
(b(iv))[3]
Discuss the practical difficulties of using this vaccine in different parts of the world.