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Vaccination Hesitancy clinical trials

The registry lists 121 studies for Vaccination Hesitancy across more than 10 countries. 14 are recruiting or about to start. 66 of them are mainly about Vaccination Hesitancy (how this is decided). Per ClinicalTrials.gov, last updated 2026-11-06.

Get an email when these change. Save the Vaccination Hesitancy studies recruiting or about to start — once a week, free: studies that open, close, add sites or post results.

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Example · made-up studies

Breast cancer · Recruiting: 2 came in, 3 changed

What changed in your saved searches, Oct 31 – Nov 6:

A study of drug A after surgery for early breast cancer

Came in · now Recruiting

Drug B with hormone therapy in advanced breast cancer

Changed

· Sites: 4 added, including Seoul and Busan

· Enrollment: 300 → 450 participants

Exercise during chemotherapy

Now Active, not recruiting

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Status

Completed
81
Status unknown
9
Terminated
7
Active, not recruiting
6
Not yet recruiting
6
Recruiting
6

Where

United States
56
Turkey
11
Canada
9
France
5
Italy
3
Hong Kong
3

Who runs them

Duke University (4) · University of Massachusetts, Worcester (3) · Johns Hopkins Bloomberg School of Public Health (3) · University of North Carolina, Chapel Hill (2) · University of South Carolina (2) · University of California, San Francisco (2) · Yuzuncu Yıl University (2) · University of Toronto (2)

Coming up

0phase 3 studies under way
4studies finish main data collection within a year

Studies recruiting or running, from their records. “Main data collection” ends at the primary completion date, the sponsor’s own estimate, which often moves.

All 4

Who these studies take

Of the 6 Vaccination Hesitancy studies recruiting now, 5 (83%) set no upper age limit and 1 (17%) stop at 75 or younger. 2 (33%) take children under 18. 0 (0%) are for women only and 0 (0%) for men only; 5 (83%) take healthy volunteers.

Recruiting studies that take each age, of 6
AgeWomenMen
102 (33%)2 (33%)
185 (83%)5 (83%)
305 (83%)5 (83%)
405 (83%)5 (83%)
505 (83%)5 (83%)
655 (83%)5 (83%)
755 (83%)5 (83%)
855 (83%)5 (83%)

Across all 121 studies, recruiting or not: 24% stop at 75 or younger and 21% at 65; 27% take children; 8% are for women only and 0% for men only; 79% take healthy volunteers. From each study’s registry entry; the criteria on its page decide.

How long Vaccination Hesitancy studies take

Of 83 interventional studies with no phase under Vaccination Hesitancy, half reached primary completion within 5 months of starting, counting those still running.

Start to primary completionEvery sponsorIndustryNon-industry
Interventional, no phase5 mo2–14 · 83 studies—6 mo3–14 · 82 studies

Each figure is the month by which half the studies had reached primary completion, with the range in which the middle half did. Studies still running count until their last registry update; studies that stopped early are left out. Phase 1 includes early phase 1; observational means prospective or not stated, as retrospective and cross-sectional studies date a window of data rather than a study. How these figures are worked out

What changed recently

From the registry's own updates since Oct 13, 2026.

Started recruiting1

Newly registered1

Studies

Recruiting first, then most recently updated. Showing 50 of 121. Browse all 121 → or search them.