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Streptococcus pneumoniae

1 published article · Updated continuously

Clinical Trial Landscape

Clinical Trials for Streptococcus pneumoniae

7 trials tracked for Streptococcus pneumoniae: 5 in phase 3 or 4 and 4 with published results. The most-cited published study has 82 citations.

7Trials tracked
5Phase 3 & 4
0Recruiting
4With published results
Phase distribution
Phase 3 5 Phase 1 1 Other / NA 1
  1. Phase 3 Evaluation of Effectiveness of GSK Biologicals' Pneumococcal Conjugate Vaccine 1024850A Against Invasive Disease Completed · 82 cited
  2. Phase 3 Pneumococcal Conjugate Vaccination in HIV in Comparison to Polysaccharide Vaccine Boosting Completed · 80 cited
  3. Phase 3 Impact on Carriage, Acute Otitis Media, Immuno & Safety of GSK Biologicals' Pneumococcal Conjugate Vaccine 1024850A Completed · 38 cited
  4. Phase 3 Vaccination With GSK 1024850A in Children Primed With GSK 1024850A & Boosted With Pneumovax 23™ Completed · 19 cited
  5. Phase 3 Primary Vaccination Study With a Pneumococcal Conjugate Vaccine in Healthy Children 6 to 10 Weeks of Age Completed
  6. Phase 1 Evaluation of Non-typable Haemophilus Influenzae and Pneumococcal Protein Vaccine Formulations in Young Adults Completed
Show 1 more trials
  1. N/A Prevenar Special Use-result Surveillance in Japan (Regulatory PostMarketing Commitment Plan) Completed

Showing the 7 most-cited and recently-updated of 7 trials. Browse the full registry →

Trial data sourced from ClinicalTrials.gov. Counts describe the research landscape and are not a treatment recommendation. Informational only — not medical advice.

What the trials found For clinicians

Streptococcus pneumoniae: what the trials found

The pneumococcal conjugate vaccine (GSK1024850A) demonstrates significant efficacy in preventing culture-confirmed invasive pneumococcal disease (IPD) caused by any of the 10 pneumococcal vaccine serotypes. In children starting vaccination within 7 months of life, a 3-dose primary course resulted in a person year rate of 0.000 compared to 0.564 in the control group (p<0.0001) [1, 3]. A 2-dose primary course also showed significant reduction in IPD rates, with 0.048 observed versus 0.564 in the control group (p=0.0009) [1, 3].

Clinical data regarding safety and immunogenicity for GSK1024850A indicate that the vaccine achieves seroprotection, with results showing 113 out of 360 subjects reaching anti-PRP levels above the 1.0 µg/mL cut-off 5. Safety profiles include recorded adverse events occurring within 7 days of vaccination 2 and specific counts of Grade 3 solicited local symptoms (ranging from 0 to 14) and general symptoms (ranging from 0 to 12) 4.

Recent results — preliminary, needs further review

  • GSK2231395A is currently under investigation but results are not yet corroborated.
  • A 7-valent vaccine injection is being studied, but findings are not yet corroborated.

For the clinician treating this condition

  • The pneumococcal conjugate vaccine (GSK1024850A) provides statistically significant protection against culture-confirmed IPD for the 10 target serotypes in infants starting vaccination within 7 months of life [1, 3].
  • Both a 3-dose and a 2-dose primary vaccination course are effective at reducing invasive disease rates compared to control groups [1, 3].
  • The vaccine demonstrates measurable seroprotection with anti-PRP levels exceeding the 1.0 µg/mL threshold 5.

AI synthesis of 3 cited trials, updated Jun 29, 2026. Informational only — not medical advice; trial data sourced from ClinicalTrials.gov. How we use AI.

HCP Mode — summaries include clinical detail, trial data, and statistical outcomes.
Patient Mode — summaries use plain language, avoiding clinical jargon.