dr in trouble
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In a classroom of 25 students (15 males and 10 females), 5 males develop hepatitis A over a 2-week period. During the next 6 weeks, an additional 3 males and 2 females develop the infection. The secondary attack rate of hepatitis A is which one of the following?<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />
1) 20%
2) 25%
3) 40%
4) 50%
5) 73%
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| robin082006
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25%
= (3+2)/20=5/20=0.25
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| anjushree
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yes 25%---5/20*100=25%
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