Condition
Varicella (Chickenpox) clinical trials and research
As of November 12, 2026, Find a Trial lists 3 Varicella (Chickenpox) clinical trials that are recruiting, at sites in 5 countries (most in Thailand (2), Honduras (1), Philippines (1)). By phase: Phase 3 (3). Every study is explained in plain English. Data from ClinicalTrials.gov and NIH RePORTER, updated November 12, 2026.
- 3Clinical trials
- 5Countries
Newest Varicella (Chickenpox) clinical trials
| Study | Phase | Where | Status | Registered |
|---|---|---|---|---|
| Second dose of chickenpox (varicella) vaccine for healthy children | Phase 3 | Akdeniz and 4 other locations | Recruiting | Mar 16, 2026 |
| Varicella vaccine with lower potencies in healthy children aged 12 months to 12 years | Phase 3 | San Pedro Sula, Cortés Department and 13 other locations | Recruiting | Feb 17, 2026 |
| MG1111 (BARYCELA) versus VARIVAX for preventing chickenpox in children 1 to 12 years | Phase 3 | Khon Kaen, Changwat Khon Kaen | Recruiting | Jul 8, 2025 |
All recruiting trials (3)
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Second dose of chickenpox (varicella) vaccine for healthy children
This project will give a Sinovac second dose of the chickenpox vaccine to children aged 15 months–12 years who had a first dose at 12 months to see if switching brands is safe and produces good immune responses.
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Varicella vaccine with lower potencies in healthy children aged 12 months to 12 years
This test compares an investigational varicella vaccine called NBP608 with licensed vaccines in children aged 12 months to 12 years to see if it is safe and can provoke an immune response.
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MG1111 (BARYCELA) versus VARIVAX for preventing chickenpox in children 1 to 12 years
This will test whether the MG1111 (BARYCELA) vaccine is safe and produces an immune response comparable to VARIVAX in healthy children aged 12 months to 12 years.
Quick answers
How many Varicella (Chickenpox) clinical trials are recruiting right now?
3, as of November 12, 2026. We update this list each time we refresh our data from ClinicalTrials.gov.
Where are these trials running?
In 5 countries. The most sites are in Thailand (2 trials), Honduras (1 trial), Philippines (1 trial), South Korea (1 trial), Turkey (Türkiye) (1 trial). Each study page lists its sites and which ones are recruiting.
What phases are they in?
Phase 3: 3. Trials with no phase listed are usually device, behavioural or observational studies.
How do I join one?
Open a study, check the "Is this trial a fit for you?" section, then contact the study team listed on the page. They will ask a few screening questions. Asking is free and does not commit you to anything. Talk it over with your doctor first.
Find the studies that fit you
A list is a starting point. Tell us your situation in your own words and we'll rank the studies that match and explain why. It's free and needs no account.