a.
New Cases = 35
Total population at risk = 400000 - 300 = 399700
Incidence rate per 100,000 population for tuberculosis = (New Cases / Total population at risk) x 100,000
= (35 / 399700) x 100,000
= 8.76 per 100,000
b.
Prevalence rate of tuberculosis per 100,000 = (New + Pre-existing cases / Total Population) x 100,000
= (35 + 300) / 400000 x 100,000
= 83.75 per 100,000
c.
Cause-specific death rate per 100,000 for tuberculosis = (Number of deaths / Total population) x 100,000
= (20 / 400000) x 100,000
= 5 per 100,000
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