In an outbreak of salmonellosis, 25 persons from 25 different households became ill, in a community...
In an outbreak of salmonellosis, 25 persons from 25 different households became ill, in a community with a total population of 1000. Calculate the attack rate. Enter your response as a percent with one decimal place.
Homework Answers
Attack rate = number of people ill ÷ number of people at risk
Number of ill people = 25
Number of people at risk = 1000
Attack rate = 25 ÷ 1000 = 0.025
To convert in percent multiply by 100
Attack rate = 0.025 × 100 = 2.5%
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