Clinical trial for Covid-19 Vaccination
Official title Effect of Messaging on Pragmatic Outcomes Within an Integrated Healthcare System
ClinicalTrials.gov ID: NCT07838038
What this study is testing
- What it's testing
- To see whether giving patients information about different COVID‑19 vaccine options, safety, and professional endorsement changes how many get vaccinated, and whether it also affects flu‑shot uptake.
- Who it's for
- Adults who are Kaiser Permanente Southern California members and are at high risk for severe COVID‑19.
- What's involved
- Participants are randomly assigned to receive either a standard reminder or a reminder that includes extra details about the available COVID‑19 vaccines and their benefits; no extra clinic visits are required.
- Time commitment
- The study runs during the 2026‑2027 respiratory virus season, with participants only needing to receive the mailed or electronic messages.
Which group you join is decided by chance.
A plain-language read of the study's public ClinicalTrials.gov listing. The study team confirms the details.
Who can take part
Ages 18 and older. Healthy volunteers may be eligible.
You may be able to join if
- Aged ≥18 years;
- Active KPSC member;
- Continuous membership from 27 August 2025 to 28 September 2026;
- Members who are aged 65 years and older, or adults aged 18-64 years with at least one of the following health conditions that increases their risk...
- No documented receipt of updated 2026-27 COVID-19 vaccine as of 28 September 2026;
You likely can't join if
- Unable to receive or opted out of email communication.
- People with unknown or missing sex.
- People who cannot safely receive a COVID-19 vaccine, including those who had a severe allergic reaction to a previous COVID-19 vaccine or have a...
- People with metastatic or terminal illness, advanced illness, receiving hospice or palliative care, or resident in skilled nursing facilities.
- People who are pregnant or currently breastfeeding.
See the full eligibility criteria
- Aged ≥18 years;
- Active KPSC member;
- Continuous membership from 27 August 2025 to 28 September 2026;
- Members who are aged 65 years and older, or adults aged 18-64 years with at least one of the following health conditions that increases their risk for severe COVID-19 illness, including: a) asthma, b) cancer, c)...
- No documented receipt of updated 2026-27 COVID-19 vaccine as of 28 September 2026;
- Has valid email information.
- Unable to receive or opted out of email communication.
- People with unknown or missing sex.
- People who cannot safely receive a COVID-19 vaccine, including those who had a severe allergic reaction to a previous COVID-19 vaccine or have a contraindication to COVID-19 vaccine or a vaccine ingredient, will not be...
- People with metastatic or terminal illness, advanced illness, receiving hospice or palliative care, or resident in skilled nursing facilities.
- People who are pregnant or currently breastfeeding.
The study team makes the final eligibility decision.
Where it is enrolling
- Pasadena, California, United States
Questions & answers
Do participants get paid in this trial?
This listing doesn't specify compensation. Many trials still reimburse travel or offer a stipend, so it's worth asking the study team when you connect.
Is it free to join, and do I need insurance?
Searching and applying through BridgeMD is free. In clinical trials the study-related treatment and visits are generally provided at no cost to you. You usually don't need insurance to take part, but confirm specifics with the study team.
How long does this study last?
The listing doesn't state an exact length. The study team walks you through the schedule and number of visits before you decide to enroll.
Who can join this trial?
This study is enrolling all sexes, 18 years and older. Healthy volunteers may be eligible. The study team makes the final eligibility decision.
Where is this trial taking place?
This study is enrolling now at Pasadena, California, United States. Enter your location above to see the nearest enrolling site and check your eligibility.
Explore other conditions
BridgeMD is an information and trial-matching tool that is independent of the study sponsor. Details come from ClinicalTrials.gov. The study team decides eligibility, and your own doctor gives medical advice.