CAIE A Level Biology 9700 · Infectious diseases
Tuberculosis (TB) remains a major health problem in many low-income countries, particularly in urban slums and prisons. Outline the biological, social and economic factors that contribute to the high rate of transmission of TB in such overcrowded and impoverished settings.
5 marks, so the mark scheme is looking for about 5 separate creditworthy points. Making the same point twice in different words earns it once.
Outline means: Give the main points briefly. Less detail than describe, but every key step has to be there. One short line per step, in order. The marks are for coverage, not depth.
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