AP Environmental Sciencemediummcq1 pt
A disease's R0 (basic reproduction number) greater than 1 means
A.each case infects more than one person on average
B.the disease cannot spread
C.everyone is immune
D.the pathogen is extinct
Explanation
Core Concept
R0 > 1 means an epidemic can grow; below 1 it fizzles — the key threshold in outbreak modeling.
Correct Answer
Aeach case infects more than one person on average
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