PCV13 Effectiveness Study Against Hospitalised VT Pneumococcal CAP in Adults 60 Years and Older

June 9, 2025 updated by: Pfizer

Low Intervention Study of the Effectiveness Of 13-Valent Pneumococcal Conjugate Vaccine (PCV13) Against Vaccine Type Pneumococcal Hospitalised Community Acquired Pneumonia (CAP) in Adults 60 Years and Older Using A Test Negative Design Study in A Well-Defined Area of the South of Madrid Region

Low interventional, prospective, multicentre, hospital-based study involving adults 60 years of age and older hospitalised with CAP at participating sites.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

PCV13 efficacy for the prevention of vaccine-type community-acquired pneumonia (VT-CAP) and invasive pneumococcal disease (IPD) was established in the Community-acquired Pneumonia Immunization Trial in Adults (CAPITA) aged 65 and older. However, there are still few available real-life effectiveness estimates in adults. The aim of this study is to evaluate the PCV13 vaccine effectiveness (VE) against hospitalised VT-pneumococcal CAP among adults aged ≥60 years in the Region of Madrid (Spain). Determination of the effectiveness of PCV13 to prevent hospitalised vaccine-type (VT)-pneumococcal CAP among adults aged ≥60 years in Madrid will be evaluated using a test-negative design study, overall and among immunocompetent persons only.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Observational

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
1821

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Spain
      • Alcorcón, Spain, 28922
        • Hospital Universitario Fundacion Alcorcon
      • Mostoles, Spain, 28935
        • Hospital Universitario de Móstoles
      • Móstoles, Spain, 28933
        • Hospital Universitario Rey Juan Carlos
    • Madrid
      • Getafe, Madrid, Spain, 28905
        • Hospital Universitarios De Getafe
      • Leganés, Madrid, Spain, 28911
        • Hospital Universitario Severo Ochoa

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

60 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Sampling Method

Non-Probability Sample

Study Population

Adults, aged 60 years and over, who are hospitalized with CAP in one of the study hospitals: Hospital Universitario de Móstoles, Hospital Universitario Fundación de Alcorcón, and Hospital Rey Juan Carlos de Móstoles.

Description

Inclusion Criteria:

  1. Age ≥60 years.
  2. Evidence of pneumonia within first 48 hours of hospital admission
  3. Evidence of a personally signed and dated informed consent document indicating that the patient (or a legally acceptable representative) has been informed of all pertinent aspects of the study.

Exclusion Criteria:

  1. Any patient who develops signs and symptoms of pneumonia after being hospitalized for ≥48 hours (either at current hospital, another transferring hospital, or a combination of these).
  2. Previously enrolled subjects readmitted ≤14 days after discharge for their study qualifying admission.
  3. At the time of enrollment, pneumonia has been excluded as the diagnosis or another diagnosis confirmed.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Observational Models: Case-Control
  • Time Perspectives: Prospective

Cohorts and Interventions

Group / Cohort

Group / Cohort

A group or subgroup of participants in an observational study that is assessed for biomedical or health outcomes.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
All participants
Diagnostic test: Urine sample collection
Serotype specific UAD (urinary antigen detection) test
Diagnostic test: Saliva collection
Streptococcus pneumonia identification in saliva samples by culture or PCR / RSV identification in saliva samples by PCR

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Number of Participants Categorized as Cases and Controls to Determine Vaccine Effectiveness (VE) of PCV13 Against Hospitalized VT CAP: Overall
Time Frame: Approximately 30 months
Cases were participants with CAP with a valid urinary antigen detection (UAD) result in whom PCV13 serotypes were identified by any method. Controls were participants with CAP with a valid UAD result and without having PCV13 serotype. VE was calculated as 1 minus the odd ratio comparing the odds of having received PCV13 for cases and controls, multiplied by 100%. VE is reported as part of statistical data in this outcome measure.
Approximately 30 months

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Number of Participants Categorized as Cases and Controls to Determine Vaccine Effectiveness (VE) of PCV13 Against Hospitalized VT CAP By Time Since Vaccination: Overall
Time Frame: Approximately 30 months
Cases were participants with CAP with a valid UAD result in whom PCV13 serotypes were identified by any method. Controls were participants with CAP with a valid UAD result and without having PCV13 serotype. VE was calculated as 1 minus the odd ratio comparing the odds of having received PCV13 for cases and controls, multiplied by 100%. Data is presented in this outcome by time since vaccination. VE is reported as part of statistical data in this outcome measure.
Approximately 30 months
Percentage of CAP Participants Categorized Per Pneumococcal Serotypes Identified
Time Frame: Approximately 30 months
Percentage of CAP participants in whom streptococcus pneumoniae was identified for PCV13 and 20-valent pneumococcal conjugate vaccine (PCV20) serotypes is reported.
Approximately 30 months
Percentage of CAP Participants in Whom Pneumococcus Identified From Saliva by Culture or Polymerase Chain Reaction (PCR)
Time Frame: Approximately 30 months
Respiratory pneumococcal carriage was determined by testing saliva specimens using both conventional culture and the sensitive molecular method of PCR for the detection of two target genes (lytA and piaB).
Approximately 30 months
Percentage of CAP Participants With Underlying At-risk Medical Conditions
Time Frame: Approximately 30 months
At-risk medical conditions included: alcoholism, asthma, celiac disease, chronic liver disease with hepatic failure, chronic liver disease without hepatic failure, chronic neurologic diseases, chronic obstructive pulmonary disease, coagulation factor replacement therapy, cochlear implant, congestive heart failure, coronary artery disease, cerebrospinal fluid leak, diabetes treated with medication, down syndrome, living in a nursing home, living in a long-term care facility, occupational risk with exposure to metal fumes, other chronic heart disease, other chronic lung disease, other pneumococcal disease risk factors, previous invasive pneumococcal disease, tobacco smoking (tobacco/e-cigarettes).
Approximately 30 months
Percentage of CAP Participants With Underlying at High-Risk Medical Conditions
Time Frame: Approximately 30 months
High-risk medical conditions included: asplenia, cancer/malignancy (hematologic), cancer/malignancy (solid tumor), chronic kidney disease, human immunodeficiency virus (HIV) - acquired immunodeficiency syndrome (AIDS), HIV - No AIDS, immunodeficiency, immunosuppressant drug therapy, multiple myeloma, organ transplantation.
Approximately 30 months
Percentage of Streptococcus Pneumoniae (SP) Isolates With Antibiotic Resistance
Time Frame: Approximately 30 months
Percentage of SP isolates with antibiotic resistance to penicillin, amoxicillin, cefotaxime, erythromycin, tetracycline, levofloxacin were reported in this outcome measure.
Approximately 30 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Pfizer

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Study Director: Pfizer CT.gov Call Center, Pfizer

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

Helpful Links

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
March 12, 2021

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
October 25, 2023

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
March 24, 2024

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
October 19, 2020

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
November 2, 2020

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
November 3, 2020

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
June 11, 2025

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
June 9, 2025

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
June 1, 2025

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • B1851202
  • CIBELES (Other Identifier: Alias Study Number)

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

IPD Plan Description

Pfizer will provide access to individual de-identified participant data and related study documents (e.g. protocol, Statistical Analysis Plan (SAP), Clinical Study Report (CSR)) upon request from qualified researchers, and subject to certain criteria, conditions, and exceptions. Further details on Pfizer's data sharing criteria and process for requesting access can be found at: https://www.pfizer.com/science/clinical_trials/trial_data_and_results/data_requests.

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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