Horizontal gene transfer rate is not the primary determinant of observed antibiotic resistance frequencies in Streptococcus pneumoniae
Lehtinen S., Chewapreecha C., Lees J., Hanage WP., Lipsitch M., Croucher NJ., Bentley SD., Turner P., Fraser C., Mostowy RJ.
Resistance frequencies are best explained as the outcome of selection, irrespective of the rate at which resistance is acquired.