Can a Caregiver's opinion sway an older Adult's decision to get the pneumonia vaccine?
NCT ID NCT07809113
First seen Sep 09, 2026 · Last updated Sep 10, 2026 · Updated 1 time
Summary
Researchers in Panama survey adults age 50 and older about pneumococcal disease and the PCV21 vaccine, which protects against pneumonia and other serious infections. One group covers ages 50 to 64; another covers adults 65 and older plus a caregiver who helps them. Each person answers a short questionnaire about vaccine knowledge, trust, barriers, and health information sources. The study gives no vaccine or medicine. It aims to show what shapes vaccine acceptance so health teams can communicate better.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- What this could lead to
- If the survey maps what drives vaccine acceptance, health teams in Panama and similar countries could write clearer messages that help more older adults get protected against pneumococcal disease.
- What could go wrong
- This study only asks questions. It cannot prove that any message or caregiver opinion causes someone to get vaccinated, and answers from 600 people may not reflect the whole country.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Participants
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About 600 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Feb 2027
An estimate. Start dates often move.
- Expected to finish
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Dec 2027
An estimate. End dates often move.
- Lead sponsor
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A research network
The lead sponsor is a research network or cooperative group.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
Who is studied
The study population will include adults aged 50 years and older in Panama who receive care through public or private health care facilities. Participants will be recruited from urban, semi-urban, and rural settings to reflect the demographic, geographic, and socioeconomic diversity of the adult population in Panama.
- Ages
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50 years and older
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria Older adults - all cohorts * Age 50 years or older. * Cohort A: 50-64 years. * Cohort B: 65 years or older. * Resident of Panama, including urban, semi-urban, or rural areas. * Has access to medical care through the public or private health care system. * Able and willing to provide signed informed consent. Caregivers - Cohort B only * Age 18 years or older. * Identified as the caregiver of a Cohort B older adult. * Has regular cohabitation or contact with the older adult, defined as at least once per week. * Able and willing to provide signed informed consent. Exclusion Criteria Older adults - all cohorts * Cognitive impairment that prevents the participant from providing informed consent. * Does not speak Spanish and no interpreter is available. Caregivers - Cohort B only \- Professional caregiver with no personal relationship to the older adult.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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CEVAXIN
Panama City, Provincia de Panamá, Panama
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Other studies related to the condition(s) this trial covers.
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- New vaccine targets 21 pneumonia strains in infant trial