A genomic portrait of the emergence, evolution, and global spread of a methicillin-resistant Staphylococcus aureus pandemic

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Figure 3.
Figure 3.

Exponential growth rates (λ) of ST22-A and other ST22 isolates (posterior probability density functions from Bayesian analysis). ST22-A is estimated to have grown significantly faster than non-ST22-A. The population size N at time t was modeled by N(t) = N(0) × e(λ × t), where λ is the exponential growth rate and t is measured in years. Accordingly, the population size change per year is eλ.

This Article

  1. Published in Advance January 8, 2013, doi: 10.1101/gr.147710.112 Genome Res. 23: 653-664

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