Trial reportClinical infectious diseases : an official publication of the Infectious Diseases Society of America2021
Safety, Tolerability, and Immunogenicity of a 20-Valent Pneumococcal Conjugate Vaccine (PCV20) in Adults 60 to 64 Years of Age.
Trial report in Clinical infectious diseases : an official publication of the Infectious Diseases Society of America, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT03313037 (A PHASE 2, RANDOMIZED, DOUBLE-BLIND TRIAL TO EVALUATE THE SAFETY AND IMMUNOGENICITY OF A MULTIVALENT PNEUMOCOCCAL CONJUGATE VACCINE IN ADULTS 60 THROUGH 64 YEARS OF AGE), which is not on this map. Cited by 77 papers, 3 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
A phase 2, randomized, double-blind trial to evaluate the safety and immunogenicity of a multivalent pneumococcal conjugate vaccine in adults 60 through 64 years of age
Who cites it
77 citing papers in PubMed, 3 syntheses or guidelines pooled it, 157 citations in OpenAlex.
- The relative immunogenicity of 20-valent and 15-valent pneumococcal conjugate vaccines: A systematic review and network meta-analysis.Human vaccines & immunotherapeutics · 2026Pooled it
- Pneumococcal Vaccine for Adults Aged ≥19 Years: Recommendations of the Advisory Committee on Immunization Practices, United States, 2023.MMWR. Recommendations and reports : Morbidity and mortality weekly report. Recommendations and reports · 2023Guideline
- Analysing pneumococcal invasiveness using Bayesian models of pathogen progression rates.PLoS computational biology · 2022Pooled it
- Immunogenicity and safety of 20-valent pneumococcal conjugate vaccine in pneumococcal vaccine-naive adults ≥18 years of age in India: A phase 3 single-arm trial.Human vaccines & immunotherapeutics · 2026Trial
- Pivotal Phase 3 Randomized Clinical Trial of the Safety, Tolerability, and Immunogenicity of 20-Valent Pneumococcal Conjugate Vaccine in Adults Aged ≥18 Years.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2022Trial
- A randomized phase 1/2 study of the safety and immunogenicity of a multivalent pneumococcal conjugate vaccine in healthy adults 50 through 85 years of age.Human vaccines & immunotherapeutics · 2021Trial
- A randomized phase 1 study of the safety and immunogenicity of 2 novel pneumococcal conjugate vaccines in healthy Japanese adults in the United States.Human vaccines & immunotherapeutics · 2021Trial
- An overview of the clinical development of the 20-valent pneumococcal conjugate vaccine in adults.Human vaccines & immunotherapeutics · 2026Review
- A narrative review on the effectiveness of PPSV23 vaccination in adults in China.Human vaccines & immunotherapeutics · 2025Review
- Recent developments of vaccines for older adults: Adjuvants and beyond.Human vaccines & immunotherapeutics · 2025Review
- Recommendations on PCV20 vaccine in adults and at-risk populations.European respiratory review : an official journal of the European Respiratory Society · 2025Review
- Article
- Post-licensure Safety Surveillance of 20-Valent Pneumococcal Conjugate Vaccine (PCV20) Among US Adults in the Vaccine Adverse Event Reporting System (VAERS).Drug safety · 2025Article
- Immunogenicity and Safety of the Higher-Valent Pneumococcal Conjugate Vaccine vs the 13-Valent Pneumococcal Conjugate Vaccine in Older Adults: A Systematic Review and Meta-analysis of Randomized Controlled Trials.Open forum infectious diseases · 2025Article
- Comparison of 13-, 15- and 20-valent pneumococcal conjugate vaccines in the paediatric Canadian population: A cost-utility analysis.Canada communicable disease report = Releve des maladies transmissibles au Canada · 2025Article
- Expanded Recommendations for Use of Pneumococcal Conjugate Vaccines Among Adults Aged ≥50 Years: Recommendations of the Advisory Committee on Immunization Practices - United States, 2024.MMWR. Morbidity and mortality weekly report · 2025Article
- Post-marketing safety surveillance of pneumococcal vaccines: a real-world pharmacovigilance study using the U.S. vaccine adverse event reporting system (VAERS) database.Frontiers in cellular and infection microbiology · 2025Article
- Article
- Pneumococcal vaccination effectiveness (PCV13 and PPSV23) in individuals with and without reduced kidney function: a test-negative design study.Clinical kidney journal · 2024Article
- Recommendations for Adult Immunization by the Korean Society of Infectious Diseases, 2023: Minor Revisions to the 3rd Edition.Infection & chemotherapy · 2024Review
17 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
11 authors at 3 institutions in 1 country.
Funding
Abstract
backgroundPneumococcal conjugate vaccines (PCVs) have significantly decreased pneumococcal disease worldwide; however, expanding serotype coverage may further reduce disease burden. A 20-valent PCV (PCV20) containing capsular polysaccharide conjugates of serotypes present in the 13-valent PCV (PCV13) and 7 new serotypes (8, 10A, 11A, 12F, 15B, 22F, and 33F) is currently in development. This phase 2 study evaluated safety, tolerability, and immunogenicity of PCV20 in adults without prior pneumococcal vaccination.
methodsIn this randomized, active-controlled, double-blinded trial, 444 adults 60 through 64 years of age were randomized to receive either a single dose of PCV20 followed 1 month later by saline placebo or a single dose of PCV13 followed 1 month later by 23-valent polysaccharide vaccine. Local injection site reactions, select systemic symptoms, and adverse events (AEs) were recorded. Immunogenicity was assessed by measuring serotype-specific opsonophagocytic activity (OPA) titers before and approximately 1 month after each vaccination.
resultsLocal reaction and systemic event rates were similar after vaccination with PCV20 or PCV13; no serious vaccine-related AEs were reported. In the PCV20 group, functional immune responses as measured by OPA were robust for all 20 serotypes included in the vaccine, with geometric mean fold rises from baseline ranging from 6.0 to 113.4.
conclusionsPCV20 was well tolerated in adults 60 to 64 years of age, with a safety profile consistent with historical experience of PCVs in this age group. Substantial OPA responses were elicited against all serotypes. Results demonstrate the potential for PCV20 to expand pneumococcal disease protection. CLINICAL TRIALS REGISTRATION: NCT03313037.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.