Assignent Solutionnurs

Give the formulas for each of the following:
Attack rate
Secondary attack rate
Case fatality rate
You are investigating the outbreak of a food-borne illness after a picnic was held by a local elementary school. Complete the table below by calculating the attack rates.
Number of Persons Who Ate Number of Persons Who Did Not Eat
Food Item Served Ill Not Ill Attack Rate Ill Not Ill Attack Rate
Three-bean salad 10 3 7 4
Beef, rare 17 6 0 1
Potato salad 12 6 4 2
A flu outbreak occurred in a military barracks that house 30 soldiers. Case A began on July 1, and case B was diagnosed on July 2. After 12 days, 14 additional cases occurred during a time span of approximately one week. Military epidemiologists believed this second set of cases represented the next generation of cases after cases A and B. Additionally, the 14 additional cases occurred in the incubation period after the occurrence of cases A and B. None of the 30 soldiers had received the flu vaccine prior to this incident, so they did not have any form of immunity. What was the secondary attack rate in this flu outbreak? (1 point)
A large conference gathered at a convention center in Boston soon after the convention center had re-opened to the public after a prolonged renovation. After the conference, 350 cases of Legionnaires’ disease were reported among conference attendees. Of these, 19 eventually died from Legionnaire’s disease. What was the case fatality rate of Legionnaires’ disease in this group?
Review the video on outbreak investigations. What are the key questions that are asked in each of the following steps of an outbreak investigation?
Confirm
Describe
Determine cause
Control
Communication