(a)[3]
State the pathogenic organism that causes TB, then describe how it is transmitted from infected people to uninfected people.
(b)[2]
People suffering from TB are treated with antibiotics. Recently, multi-drug resistant TB(MDR-TB) has appeared, making the disease harder to treat. Suggest how this drug resistance could have arisen.
(c)[5]
The World Health Organization (WHO) intends to eradicate TB worldwide by 2035. Using Fig. 2.1 as evidence, discuss the difficulties that will have to be overcome in eradicating TB.