The incidence rate of active cases of TB for the 6 month per

The incidence rate of active cases of TB for the 6 month period was 7 per 100, 000 population 14 per 100, 000 population 27 per 100, 000 population 28 per 100, 000 population 130 per 100, 000 population The prevalence or active TB as of June 30, 2003 was: 14 per 100, 000 population 137 per 100, 000 population 144 per 100, 000 population 264 per 100, 000 population none of the above Which of the following is an advantage of active surveillance? requires less project staff is relatively inexpensive to employ relies on different disease definitions to account for all cases more accurate due to reduced reporting burden for health care providers reporting systems can be developed quickly.

Solution

Answer:

1) C

Incidence rate =   50 / (183000- 251) = 2.7 x 10^-4

2) b

Prevalance rate = (251/ 183000) x 100000

                       = 137

3) More accurate due to reduced reporting burden for health care providers.

Treatment is given unless the test are positive for a disease, so active surveillance is more beneficial.