The population of a community on February 15, 2015, was 40,000. The city has a s

Question

The population of a community on February 15, 2015, was 40,000. The city has a surveillance system that collects reports of flu cases monthly. During the period between January 1 and April 1, 2015, 2,000 new cases of flu occurred in the community. Of these cases, 800 persons were ill with flu according to surveillance reports on April 1, 2015.

The prevalence rate of active flu as of April 1, 2015, was:

A. 21 per 1,000 population B. 30 per 1,000 population C. 10 per 1,000 population D. Cannot be calculated as there is no information on duration E. 37.5 per 1,000 population

Explanation / Answer

CORRECT OPTION: D: Cannot be calculated as there is no information on duration.

EXPLANATION:
Population on February 15, 2015 is given.

Persons affected with flu as on April 2015 given.

But, The prevalence rate of active flu as on April 1, 2015 is asked.

This cannot be calculated because population difference between February 15 and April 1 is not available.

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.