Carriage burden, multiple colonization and antibiotic pressure promote emergence of resistant vaccine escape pneumococci. Author(s): Mitchell PK, Lipsitch M, Hanage WP|Journal: Philos Trans R Soc Lond B Biol Sci|PMID: 25918447| June 2015 Pneumococcal conjugate vaccines target the limited subset of the more than 90 known serotypes of Streptococcus pneumoniae responsible for the…