Efficacy of Heptavalent Conjugate Pneumococcal Vaccine (Wyeth Lederle) in 7,000 Infants and Children: Results of the Northern California Kaiser Permanente Efficacy Trial

Efficacy of Heptavalent Conjugate Pneumococcal Vaccine (Wyeth Lederle) in 7,000 Infants and Children: Results of the Northern California Kaiser Permanente Efficacy Trial