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Flu shot linked to fewer deaths after fractures in seniors

NCT ID NCT07231016

Prevention Sponsor: Taipei Medical University Hospital Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study looked at over half a million older adults in Taiwan who were hospitalized for a bone fracture. Researchers compared those who had received a flu vaccine in the past year to those who had not. They found that vaccinated patients had fewer infections and a lower chance of dying within 30 days after their fracture.

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

561,566 people

The number who actually took part.

Started

Nov 2019

Finished

Jan 2025

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Who is studied

This study utilized a nationwide, population-based cohort encompassing over twenty million insured individuals. From this cohort, we identified older adults admitted for fracture treatment between 2009 and 2020. Among them, approximately two in five had received an influenza vaccination within the year before hospitalization. To minimize confounding, we performed one-to-one propensity score matching, pairing each vaccinated patient with an unvaccinated counterpart based on demographic, socioeconomic, and clinical characteristics, including age, sex, income status, fracture type, comorbidities, and prior healthcare utilization.

Ages

20 days and older

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show 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: Patients with fracture hospitalization who aged more than 65 years Exclusion Criteria: People had no fracture hospitalization and people aged lower than 65 years

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Conditions

The condition(s) this trial relates to.

bone fracture infectious disease influenza

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Fracture Influenza vaccination

Contacts and locations

Locations

  • Taipei Medical University Hospital

    Taipei, 110, Taiwan

More trials for these conditions

Other studies related to the condition(s) this trial covers.