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Influenza, Human clinical trials

The registry lists 2,356 studies for Influenza, Human across more than 10 countries. 184 are recruiting or about to start. 2,052 of them are mainly about Influenza, Human (how this is decided). Per ClinicalTrials.gov, last updated 2026-11-10.

ClinicalTrials.gov finds 2,735 studies for Influenza, Human. How that becomes 2,355 here

This page counts the studies the registry files under Influenza, Human, and those it files under no condition that list Influenza, Humanthemselves. Each study its search finds is placed by how the registry filed it and by the conditions it lists. ClinicalTrials.gov counts as of Nov 8, 2026. How condition pages count

  1. 2,735Found by its condition searchIt reads the conditions a study lists and their synonyms, and also titles and keywords.
  2. −106List Influenza, Human as a condition, but the registry did not file them under itMost often written as “Influenza A” (28), “Influenza B” (13), and “Influenza Type B” (12). The registry filed them under other conditions only, most often COVID-19 (38) and Influenza in Birds (24).
  3. −274Match it another way234 name it in the title, 33 in a keyword, and 7 by a synonym or other text the search reads.
  4. 2,355The count on this page192 of them list Influenza, Human in their own words; the registry filed them under no condition.

Get an email when these change. Save the Influenza, Human 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

One email a week for all your saved searches. Stop any time.

Status

Completed
1,836
Status unknown
129
Recruiting
119
Terminated
82
Withdrawn
61
Active, not recruiting
57

Phase

Phase 2
542
Phase 3
461
Phase 1
438
Phase 4
365
Early Phase 1
7

Where

United States
965
China
172
Canada
156
United Kingdom
151
Germany
117
Belgium
106

Who runs them

National Institute of Allergy and Infectious Diseases (NIAID) (186) · GlaxoSmithKline (185) · Sanofi Pasteur, a Sanofi Company (116) · Novartis Vaccines (76) · Seqirus (51) · MedImmune LLC (42) · Stanford University (29) · Novartis (25)

What is being tested here

Drugs under test in Influenza, Human studies, those with the most open studies first. Medicines only given beside them are not counted. How drugs are counted

DrugOpenPhase 3All
Baloxavir71318
FluMist4435
Oseltamivir31053
MF5931022
mRNA-1010 influenza vaccine2311
GP681235
MK-1406214
Tivoxavir marboxil203
Vaxigrip1318
Live Attenuated Influenza Vaccine1114

Drug classes tested here Corticosteroids 2 open · Statins 1 open · NSAIDs 1 open

Coming up

35phase 3 studies under way
92studies finish main data collection within a year17 of them phase 3

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

The 10 nearest, phase 3 first

Who these studies take

Of the 119 Influenza, Human studies recruiting now, 62 (52%) set no upper age limit and 47 (39%) stop at 75 or younger. 31 (26%) take children under 18. 2 (2%) are for women only and 0 (0%) for men only; 65 (55%) take healthy volunteers.

Recruiting studies that take each age, of 119
AgeWomenMen
1021 (18%)21 (18%)
1892 (77%)90 (76%)
3096 (81%)94 (79%)
4096 (81%)94 (79%)
5087 (73%)85 (71%)
6578 (66%)77 (65%)
7572 (61%)71 (60%)
8570 (59%)69 (58%)

Across all 2,356 studies, recruiting or not: 50% stop at 75 or younger and 47% at 65; 30% take children; 3% are for women only and 1% for men only; 72% take healthy volunteers. From each study’s registry entry; the criteria on its page decide.

How long Influenza, Human studies take

Of 153 phase 3 interventional studies under Influenza, Human, half reached primary completion within 8 months of starting, counting those still running.

Start to primary completionEvery sponsorIndustryNon-industry
Phase 111 mo4–21 · 148 studies9 mo4–16 · 94 studies16 mo7–29 · 54 studies
Phase 1/212 mo7–16 · 43 studies13 mo7–16 · 41 studies—
Phase 210 mo5–19 · 122 studies7 mo5–14 · 86 studies19 mo9–56 · 36 studies
Phase 2/38 mo6–12 · 10 studies——
Phase 38 mo4–15 · 153 studies8 mo3–14 · 118 studies16 mo8–41 · 35 studies
Phase 414 mo3–37 · 137 studies3 mo2–6 · 36 studies19 mo5–52 · 101 studies
Interventional, no phase6 mo3–16 · 166 studies—7 mo3–18 · 146 studies
Observational21 mo7–59 · 133 studies10 mo2–34 · 37 studies36 mo12–92 · 96 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 recruiting7

Show 2 more

Stopped1

Newly registered18

Show 13 more

Studies

Recruiting first, then most recently updated. Showing 50 of 2,356. Browse all 2,356 → or search them.