Question

1) The epidemic curve for both the Hepatitis Outbreak and Oswego Outbreak case studies are indicative of this type of outbreak.

A) propagated (progressive source)

B) continuous common source

C) point source

D) confirmed

2) What is the term used to describe; "The severity of the disease; measured by the case fatality ratio (CFR%)".

3) If a male participant in an HIV study considers himself heterosexual, yet has a history of sex with men, he may not reveal the homosexual behavior when questioned. This type of bias is known as _____________.

A) Recall bias

B) Prevarication bias

C) Interviewer bias

D) Selection bias

4) An influenza outbreak occurred in a private high school dormitory that housed 83 students. Case A began on October 1 and cases B and C were diagnosed on October 2. After approximately 10 days, 44 additional cases occurred in a one week time span. The county epidemiologist believed this second group of cases represented the same generation of cases, and was in the second incubation period after the occurrence of cases A, B, and C; none of the 83 students was known to be immune. What is the secondary attack rate?

5) Laryngeal cancer rates in smokers is 160.0 (per 100,000) and 25.0 (per 100,000) among nonsmokers. Among smokers, what percentage of laryngeal cancer cases are due to the exposure (smoking)? (This is the etiologic fraction or attributable risk %)

6) If HIV accounted for 25% of all causes of death, this would be an example of:

A) Case fatality ratio

B) Cause-specific mortality rate

C) Proportional mortality ratio

D) Incidence rate

7) Denton is a community of 100,000 persons. During the year 2009, there were 5000 deaths from all causes. That same year, there were 10,000 cases of diabetes: 6000 males and 4000 females.

During the year, there were 500 deaths due to diabetes, 200 of them among females. The cause-specific mortality rate (CSMR) for diabetes is:

Answer 1

1,d, Confirmed:
It correctly identifies them on lab tests for infectious diseases for infected people with mild symptoms and with no symptoms. It is the best and most definitive case.
2, The case fatality rate(CFR) is a measure of the severity of a disease as a proportion of cases of specified cases.
3, a, Recall bias
It is a systematic error happens when participants not remember the previous events or avoids the details. There is a problem in studies that have itself reporting. It is called recall bias.
4, It is a probability of infection occurs in susceptible persons with a reasonable incubation period following with another infectious source.
Primary cases =83
To find the secondary attack cases minus the 44 additional cases with primary cases
83 - 44=39
The secondary attack rate is 39.