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What is The secondary attack rate of measles is more than mumps. What is the conclusion? and explain in detail?
Ans. c (Measles is more infectious than mumps). (Ref: Park PSM 22nd/pg. 58, 96)SECONDARY ATTACK RATE# It is defined as "the number of exposed persons developing the disease within the range of IP, following exposure to primary case"SAR =Number of exposed persons developing the disease within the range of IP------------------------------------------Total number of exposed/wsusceptible" contactsx 100# The primary case is excluded from both the numerator and denominator.# Case fatality rate is a measure of "killing power" of a disease.