Selective and genetic constraints on pneumococcal serotype switching.

Author(s): Croucher NJ, Kagedan L, Thompson CM, Parkhill J, Bentley SD, Finkelstein JA, Lipsitch M, Hanage WPJournal: PLoS GenetPMID: 25826208 March 2015
Streptococcus pneumoniae isolates typically express one of over 90 immunologically distinguishable polysaccharide capsules (serotypes), which can be classified into "serogroups"…