Why we need pneumococcal vaccine effectiveness studies.
International Vaccine Access Center, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21231, USA. Electronic address: klobrien@jhu.edu.
Katherine L
KL
O'Brien
D003362:Cost-Benefit Analysis; D006801:Humans; D011008:Pneumococcal Infections / Q000517:prevention & control*; D022242:Pneumococcal Vaccines / Q000276:immunology*; D018074:Vaccines, Conjugate / Q000276:immunology
D022242:Pneumococcal Vaccines; D018074:Vaccines, Conjugate