Use of surveillance data to estimate the effectiveness of the 7-valent conjugate pneumococcal vaccine in children less than 5 years of age over a 9 year period

De Serres G, Pilishvili T, Link-Gelles R, Reingold A, Gershman K, Petit S, Farley MM, Harrison LH, Lynfield R, Bennett NM, Baumbach J, Thomas A, Schaffner W, Beall B, Whitney C, Moore M. Use of surveillance data to estimate the effectiveness of the 7-valent conjugate pneumococcal vaccine in children less than 5 years of age over a 9 year period. Vaccine. 2012; 30(27): 4067-72.