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COVID-19 clinical trials

The registry lists 7,990 studies for COVID-19 across more than 10 countries. 466 are recruiting or about to start. 6,706 of them are mainly about COVID-19 (how this is decided). Per ClinicalTrials.gov, last updated 2026-11-10. Counting its narrower condition Post-Acute COVID-19 Syndrome too: 8,391 studies, 616 open.

ClinicalTrials.gov finds 10,269 studies for COVID-19. How that becomes 7,989 here

This page counts the studies the registry files under COVID-19, and those it files under no condition that list COVID-19themselves. 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. 10,269Found by its condition searchIt reads the conditions a study lists and their synonyms, and also titles and keywords.
  2. −397Filed under a narrower condition, counted on its own pagePost-Acute COVID-19 Syndrome 396
  3. −167List COVID-19 as a condition, but the registry did not file them under itMost often written as “COVID-19 Pneumonia” (31), “COVID-19 Respiratory Infection” (25), and “COVID-19 Acute Respiratory Distress Syndrome” (13). The registry filed them under other conditions only, most often Respiratory Distress Syndrome (12) and Influenza, Human (12).
  4. −1,717Match it another way1,676 name it in the title, 21 in a keyword, and 20 by a synonym or other text the search reads.
  5. 7,988Counted here and found by its search416 of them list COVID-19 in their own words; the registry filed them under no condition.
  6. +1
    Counted here, but its search does not find them
  7. 7,989The count on this page

Get an email when these change. Save the COVID-19 studies recruiting or about to start — once a week, free: studies that open, close, add sites or post results.

Watch these studies
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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
4,437
Status unknown
1,801
Terminated
575
Withdrawn
386
Recruiting
356
Active, not recruiting
267

Phase

Phase 2
1,469
Phase 3
965
Phase 1
710
Phase 4
261
Early Phase 1
61

Where

United States
1,858
France
782
China
472
Spain
401
Turkey
398
Italy
392

Who runs them

Assistance Publique - Hôpitaux de Paris (115) · Assiut University (96) · Pfizer (69) · National Institute of Allergy and Infectious Diseases (NIAID) (61) · University Hospital, Strasbourg, France (58) · Cairo University (45) · University Hospital, Montpellier (43) · Duke University (39)

What is being tested here

Drugs under test in COVID-19 studies, those with the most open studies first. Medicines only given beside them are not counted. How drugs are counted

DrugOpenPhase 3All
Remdesivir62139
Molnupiravir4814
Hydroxychloroquine366123
BNT162 Vaccine32351
Tocilizumab31032
Nirmatrelvir3622
Baricitinib31318
Interleukin 1 Receptor Antagonist Protein3915
mRNA COVID-19 Vaccine3412
Baloxavir333

Drug classes tested here Tyrosine kinase inhibitors (TKIs) 5 open · JAK inhibitors 4 open · Corticosteroids 2 open · NSAIDs 2 open · SGLT2 inhibitors 2 open

Coming up

56phase 3 studies under way
146studies finish main data collection within a year11 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 356 COVID-19 studies recruiting now, 207 (58%) set no upper age limit and 83 (23%) stop at 75 or younger. 91 (26%) take children under 18. 12 (3%) are for women only and 1 (<1%) for men only; 136 (38%) take healthy volunteers.

Recruiting studies that take each age, of 356
AgeWomenMen
1066 (19%)65 (18%)
18320 (90%)310 (87%)
30323 (91%)313 (88%)
40324 (91%)314 (88%)
50325 (91%)315 (88%)
65312 (88%)306 (86%)
75283 (79%)277 (78%)
85251 (71%)245 (69%)

Across all 7,990 studies, recruiting or not: 22% stop at 75 or younger and 16% at 65; 17% take children; 2% are for women only and 1% for men only; 34% take healthy volunteers. From each study’s registry entry; the criteria on its page decide.

How long COVID-19 studies take

Of 582 phase 2 interventional studies under COVID-19, half reached primary completion within 9 months of starting, counting those still running.

Start to primary completionEvery sponsorIndustryNon-industry
Phase 17 mo3–15 · 384 studies6 mo2–12 · 233 studies11 mo5–19 · 151 studies
Phase 1/211 mo4–20 · 187 studies10 mo5–19 · 80 studies11 mo3–21 · 107 studies
Phase 29 mo5–16 · 582 studies8 mo5–13 · 223 studies11 mo5–18 · 359 studies
Phase 2/311 mo5–19 · 168 studies10 mo5–18 · 73 studies11 mo5–22 · 95 studies
Phase 39 mo4–17 · 453 studies8 mo4–16 · 168 studies10 mo5–19 · 285 studies
Phase 48 mo4–16 · 188 studies5 mo3–11 · 43 studies9 mo5–19 · 145 studies
Interventional, no phase9 mo3–19 · 1,476 studies5 mo2–11 · 138 studies9 mo3–20 · 1,338 studies
Observational13 mo5–29 · 1,774 studies10 mo3–19 · 134 studies14 mo5–30 · 1,640 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 recruiting5

Results posted4

Stopped4

Newly registered6

Show 1 more

Studies

Recruiting first, then most recently updated. Showing 50 of 7,990. Browse all 7,990 → or search them.