Question
What do you understand by SAR? How is it important?
Answer :
Word Count : 252
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SAR, or Secondary Attack Rate, is an epidemiological measure used to assess the transmissibility of an infectious disease within a defined group, typically a household, school, or close-contact setting. It represents the proportion of susceptible individuals who become infected after exposure to a primary case. Mathematically, SAR is calculated by dividing the number of new cases among contacts by the total number of susceptible contacts and multiplying by 100 to express it as
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