1.Hausdorff, WP, Feikin, DR, Klugman, KP. Epidemiological differences among pneumococcal serotypes. Lancet Infectious Diseases 2005; 5: 83–93.
2.Brueggemann, AB, et al. Clonal relationships between invasive and carriage Streptococcus pneumoniae and serotype- and clone-specific differences in invasive disease potential. Journal of Infectious Diseases 2003; 187: 1424–1432.
3.Sandgren, A, et al. Effect of clonal and serotype-specific properties on the invasive capacity of Streptococcus pneumoniae. Journal of Infectious Diseases 2004; 189: 785–796.
4.Pilishvili, T, et al. Sustained reductions in invasive pneumococcal disease in the era of conjugate vaccine. Journal of Infectious Diseases 2010; 201: 32–41.
5.Centres for Disease Control and Prevention. Direct and indirect effects of routine vaccination of children with 7-valent pneumococcal conjugate vaccine on incidence of invasive pneumococcal disease – United States, 1998–2003. Morbidity and Mortality Weekly Report 2005; 54: 893–897.
6.Lexau, CA, et al. Changing epidemiology of invasive pneumococcal disease among older adults in the era of paediatric pneumococcal conjugate vaccine. Journal of the American Medical Association 2005; 294: 2043–2051.
7.World Health Organisation. Worldwide progress in introducing pneumococcal conjugate vaccine, 2000–2008. Weekly Epidemiological Record 2008; 43: 388–392.
8.Department of Health. Immunization against infectious disease. The Green Book 2010; 25: 295–313.
12.Miller, E, et al. Herd immunity and serotype replacement 4 years after seven-valent pneumococcal conjugate vaccination in England and Wales: an observational cohort study. Lancet Infectious Diseases 2011; 11: 760–768.
14.Huang, SS, et al. Continued impact of pneumococcal conjugate vaccine on carriage in young children. Paediatrics. Published online: July 2009. doi:10.1542/peds.2008-3099.
15.De Carvalho Gomes, H, et al. Use of seven-valent pneumococcal conjugate vaccine (PCV7) in Europe, 2001–2007. Eurosurveillance 2009; 14(12).
16.Vestrheim, DF, et al. Indirect effect of conjugate pneumococcal vaccination in a 2 + 1 dose schedule. Vaccine 2010; 28: 2214–2221.
17.Harboe, ZB, et al. Early effectiveness of heptavalent conjugate pneumococcal vaccination on invasive pneumococcal disease after the introduction in the Danish Childhood Immunization Programme. Vaccine 2010; 28: 2642–2647.
18.Black, S. The volatile nature of pneumococcal serotype epidemiology: potential for misinterpretation. Paediatric Infectious Disease Journal 2010; 29: 301–303.
19.O'Brien, KL, et al. Effect of pneumococcal conjugate vaccine on nasopharyngeal colonization among immunized and unimmunized children in a community-randomized trial. Journal of Infectious Diseases 2007; 196: 1211–1220.
20.Weinberger, DM, Malley, R, Lipsitch, M. Serotype replacement in disease after pneumococcal vaccination. Lancet. Published online: 13 April 2011. doi:10.1016/S0140-6736(10)62225-8.
21.Brueggemann, AB, et al. Vaccine escape recombinants emerge after pneumococcal vaccination in the United States. PLoS Pathogens 2007; 3: 1628–1636.
22.Trotter, CL, et al. Epidemiology of invasive pneumococcal disease in the pre-conjugate vaccine era: England and Wales, 1996–2006. Journal of Infection 2010; 60: 200–208.
23.Jefferies, JM, et al. Temporal analysis of invasive pneumococcal clones from Scotland illustrates fluctuations in diversity of serotype and genotype in the absence of pneumococcal conjugate vaccine. Journal of Clinical Microbiology 2010; 48: 87–96.
24.Lepoutre, A, et al. Impact of infant pneumococcal vaccination on invasive pneumococcal diseases in France, 2001–2006. Eurosurveillance 2008; 28(35).
25.Whitney, CG, et al. Decline in invasive pneumococcal disease after the introduction of protein-polysaccharide conjugate vaccine. New England Journal of Medicine 2003; 348: 1737–1746.
26.Flasche, S, Slack, M, Miller, E. Long term trends introduce a potential bias when evaluating the impact of the pneumococcal conjugate vaccination programme in England and Wales. Eurosurveillance 2011; 16(20).
27.Hammitt, LL, et al. Indirect effect of conjugate vaccine on adult carriage of Streptococcus pneumoniae: an explanation of trends in invasive pneumococcal disease. Journal of Infectious Diseases 2006; 193: 1487–1494.