Impact of the Pneumococcal Heptavalent Conjugated Vaccine on Streptococcus pneumoniae Nasopharyngeal Carriage and Antimicrobial Susceptibility in Children 2-5-Year-Old in Beijing, China
Min Lv, Shuang Bai, Yanni Sun, Tiegang Zhang, Aihua Li, Jiang Wu

World J. Vaccines Vol.7 No.3, August 30, 2017
DOI:10.4236/wjv.2017.73003