title: Safety and immunogenicity of heptavalent pneumococcal conjugate vaccine in Taiwanese infants.
abstract: OBJECTIVE
  The prevalence of antibiotic-resistant pneumococci has increased markedly in Taiwan since the 1990s. The prevention of pneumococcal infection by effective vaccination is an urgent need. The purpose of this study was to assess the safety and immunogenicity of heptavalent pneumococcal conjugate vaccine (serotypes 4, 6B, 9V, 14, 18C, 19F, 23F) in Taiwanese infants.
  
  
  METHODS
  Sixty healthy Taiwanese infants received heptavalent pneumococcal conjugate vaccine at 2, 4 and 6 months of age in an open-label, non-comparative trial. Routine diphtheria-tetanus-pertussis vaccines were concomitantly administered. Side effects were recorded and the antibody titer to each of the 7 pneumococcal serotypes was measured before vaccination and 1 month after the third vaccination.
  
  
  RESULTS
  Mild to moderate local reactions at the injection site were the common findings (17 to 30%) after vaccination but were not correlated with the number of vaccinations. Fever, restlessness, fussiness, and loss of appetite were the most common systemic reactions (22 to 53%). After 3 doses of vaccine, the geometric mean concentration of immunoglobulin G showed a significant rise (p < 0.001) to all 7 pneumococcal serotypes. More than 95% of infants had antibody titer > or = 0.15 microg/mL of all serotypes, and 93% (serotype 23F) to 100% (serotypes 4 and 19F) of infants achieved an antibody titer > pr = 1 microg/mL.
  
  
  CONCLUSIONS
  Inoculation with the heptavalent pneumococcal conjugate vaccine including the prevalent serotypes in Taiwan is safe and effective in preventing pneumococcal disease in Taiwanese children.
authors.affiliation: Department of Pediatrics, National Taiwan University Hospital, Taipei, Taiwan.
authors.forename: Pei-Lan
authors.initials: PL
authors.lastname: Shao
authors.forename: Chun-Yi
authors.initials: CY
authors.lastname: Lu
authors.forename: Luan-Yin
authors.initials: LY
authors.lastname: Chang
authors.forename: Fu-Yuan
authors.initials: FY
authors.lastname: Huang
authors.forename: Chung-Yi
authors.initials: CY
authors.lastname: Wang
authors.forename: Chin-Ying
authors.initials: CY
authors.lastname: Yang
authors.forename: Tsung-Zu
authors.initials: TZ
authors.lastname: Wu
authors.forename: Chin-Yun
authors.initials: CY
authors.lastname: Lee
authors.forename: Li-Min
authors.initials: LM
authors.lastname: Huang
mesh_terms: D000907:Antibodies, Bacterial / Q000097:blood; D004334:Drug Administration Schedule; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D011008:Pneumococcal Infections / Q000276:immunology* / Q000517:prevention & control*; D022242:Pneumococcal Vaccines / Q000008:administration & dosage*; D013296:Streptococcus pneumoniae / Q000276:immunology*; D013624:Taiwan; D018074:Vaccines, Conjugate / Q000008:administration & dosage*
chemical_list: D000907:Antibodies, Bacterial; D022242:Pneumococcal Vaccines; D018074:Vaccines, Conjugate