Frequency-dependent selection can forecast evolution in Streptococcus pneumoniae.

Author(s): Azarian T, Martinez PP, Arnold BJ, Qiu X, Grant LR, Corander J, Fraser C, Croucher NJ, Hammitt LL, Reid R, Santosham M, Weatherholtz RC, Bentley SD, O'Brien KL, Lipsitch M, Hanage WPJournal: PLoS BiolPMID: 33091022 October 2020
Predicting how pathogen populations will change over time is challenging. Such has been the case with Streptococcus pneumoniae, an important…

The impact of serotype-specific vaccination on phylodynamic parameters of Streptococcus pneumoniae and the pneumococcal pan-genome.

Author(s): Azarian T, Grant LR, Arnold BJ, Hammitt LL, Reid R, Santosham M, Weatherholtz R, Goklish N, Thompson CM, Bentley SD, O'Brien KL, Hanage WP, Lipsitch MJournal: PLoS PathogPMID: 29617440 April 2018
In the United States, the introduction of the heptavalent pneumococcal conjugate vaccine (PCV) largely eliminated vaccine serotypes (VT); non-vaccine serotypes…

Weak Epistasis May Drive Adaptation in Recombining Bacteria.

Author(s): Arnold BJ, Gutmann MU, Grad YH, Sheppard SK, Corander J, Lipsitch M, Hanage WPJournal: GeneticsPMID: 29330348 March 2018
The impact of epistasis on the evolution of multi-locus traits depends on recombination. While sexually reproducing eukaryotes recombine so frequently…