Niche and neutral effects of acquired immunity permit coexistence of pneumococcal serotypes. Author(s): Cobey S, Lipsitch M|Journal: Science|PMID: 22383809| March 2012 Over 90 capsular serotypes of Streptococcus pneumoniae, a common nasopharyngeal colonizer and major cause of pneumonia, bacteremia, and meningitis, are…
