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5 clinical studies listed.

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Varicella (Chickenpox)

Tundra lists 5 Varicella (Chickenpox) clinical trials. Each listing includes eligibility criteria, study locations, and direct links to research sites in the Tundra directory.

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NOT YET RECRUITING

NCT07742644

A Study on the Immune Response and Safety of an Investigational Combined Measles, Mumps, Rubella and Varicella Vaccine, When Given to Healthy Children 4 to 6 Years of Age

The purpose of this study is to evaluate how consistently 3 different manufacturing lots of the GSK's investigational measles, mumps, rubella, and varicella (MMRVNS) vaccine will produce an immune response. It will also compare the overall immune response to the MMRVNS vaccine with that of the Merck licensed measles, mumps, rubella, and varicella (MMRV) vaccine. The vaccines will be given as a second dose to children aged 4 to 6 years who have previously received a first dose of any combination of measles, mumps, rubella, and varicella-containing vaccine(s). The study will also assess the immune response and safety of the MMRVNS and MMRV vaccines when given at the same time as a diphtheria, tetanus, acellular pertussis, and inactivated poliovirus (DTaP-IPV) vaccine. The DTaP-IPV vaccine used is licensed as Kinrix in the United States.

Gender: All

Ages: 4 Years - 6 Years

Updated: 2026-08-03

18 states

Measles
Mumps
Rubella
+2
NOT YET RECRUITING

NCT07415252

SkyVaricella® (NBP608) Vaccine With Lower Potencies in Healthy Children Aged 12 Months to 12 Years

The goal of this study is to evaluate the safety and immunogenicity of an investigational varicella vaccine in children. Researchers will compare the investigational vaccine, NBP608, with licensed varicella vaccines. The study includes children aged 12 months to 12 years. Approximately 780 participants will take part in this study. Participants will be randomly assigned to receive either the investigational vaccine (NBP608) or licensed varicella vaccines. Some participants will receive two doses, while others will receive one dose, according to the assigned study group. Participants will: Receive two subcutaneous injections of a study vaccine, administered approximately three months apart (if applicable). Visit the study clinic seven times over approximately 15 months. Receive follow-up phone calls 7 days after each vaccination to monitor for safety.

Gender: All

Ages: 12 Months - 12 Years

Updated: 2026-06-15

9 states

Varicella (Chickenpox)
NOT YET RECRUITING

NCT07473427

Immunogenicity and Safety of Varicella Vaccine, Live in Healthy Vietnamese Children

This is a single armed, Phase 3 study to assess the immunogenicity and safety of the varicella vaccine manufactured by Sinovac. A total of 300 healthy participants aged 1-12 years will be enrolled. All participants will receive a single dose of varicella vaccine manufactured by Sinovac.

Gender: All

Ages: 1 Year - 12 Years

Updated: 2026-06-12

Varicella (Chickenpox)
Varicella Immunisation
RECRUITING

NCT07054099

A Study to Evaluate Immunogenicity and Safety After the First and Second Doses of MG1111 (BARYCELA Inj.) in Healthy Children Aged 12 Months to 12 Years

This clinical study aims to evaluate the safety and immune response of MG1111, in healthy children compared to VARIVAX. The study will follow participants for 42 days after receiving two doses, with additional follow-ups for up to 10 years to monitor varicella infection.

Gender: All

Ages: 12 Months - 12 Years

Updated: 2026-04-17

1 state

Varicella (Chickenpox)
Chickenpox Vaccine
RECRUITING

NCT07475000

Second Dose of Varicella Vaccine in Healthy Children

This study aim to assess the immunogenicity and safety of interchangeable administration of the second dose of varicella vaccine. A total of 300 healthy participants aged 15 months - 12 years will be enrolled. Written informed consent form will be obtained from participants' parents or legally acceptable representatives (and assents will be obtained from participants aged above 9 years old and written consent forms will be prepared and consent will be obtained in writing if possible from the participants aged 3-8 years old.) before enrollment. Participants will be assigned to 5 groups according to the brand of first dose varicella vaccine they received at the age of 12 months. All participants will receive the second dose of varicella vaccine manufactured by Sinovac. The duration of individual participation from enrollment to the last onsite visit will be a maximum of 42 days. The end of study is considered the completion of the last visit for the last participant in this study. Blood samples (2.5 - 3.0ml per time) for immunogenicity assessment will be collected. The blood samples will be collected before vaccination and 42 days after vaccination.

Gender: All

Ages: 15 Months - 12 Years

Updated: 2026-03-16

Varicella (Chickenpox)
Varicella Immunisation