International Study on COVID-19 Vaccine to Assess Immunogenicity, Reactogenicity and Efficacy (InVITE)
InVITE
1 other identifier
observational
5,399
7 countries
11
Brief Summary
InVITE is funded by NIAID and is conducted in multiple international sites (approximately 20 sites across 7 countries). This is a study of adults who receive locally available COVID-19 vaccines through local vaccination programs. Persons will be enrolled within one day (before or after) of receipt of a COVID-19 vaccine. The study will enroll participants who receive COVID-19 vaccination at local clinics and/or study sites.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for all trials
Started Aug 2021
Longer than P75 for all trials
11 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
Click on a node to explore related trials.
Study Timeline
Key milestones and dates
Study Start
First participant enrolled
August 16, 2021
CompletedFirst Submitted
Initial submission to the registry
October 26, 2021
CompletedFirst Posted
Study publicly available on registry
October 27, 2021
CompletedPrimary Completion
Last participant's last visit for primary outcome
August 19, 2025
CompletedStudy Completion
Last participant's last visit for all outcomes
August 19, 2025
CompletedDecember 18, 2025
December 1, 2025
4 years
October 26, 2021
December 16, 2025
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
1. To characterize immunogenicity (by measurement of anti-Spike [S] antibody [Ab]) of available COVID-19 vaccines in the overall study population, in each of the countries and in defined subgroups
Measured by amount of Anti-S Ab at 2 months after completion of vaccine regimen.
2 months
Secondary Outcomes (5)
Evaluate duration of immunogenicity
1 day, 2 months, 10 months
Evaluate immunogenicity in predefined subgroups (by age, body mass index [BMI], comorbidities, HIV, breakthrough infection, or evidence of prior infection with SARS-CoV-2).
1 day, 2 months, 10 months
Characterize virus causing breakthrough infections using viral genomic sequencing.
1 day
Compare immunogenicity between different vaccines.
2 months
Evaluate infection rates after vaccination.
1 day
Eligibility Criteria
Study participants will be people who are about to receive or have already received a Coronavirus disease 2019 (COVID-19) vaccine through the local vaccination program.
You may qualify if:
- years of age or older.
- Ability to provide informed consent.
- Enrollment within one day (before or after) of receipt of COVID-19 vaccine.
- Willingness to be evaluated (including collection of blood and nasopharyngeal samples) during the prescribed study visits and/or during acute illness consistent with SARS-CoV-2 infection during the study period.
- Willingness to allow storage of biological samples for research testing as outlined in this protocol.
You may not qualify if:
- Any acute or chronic condition that, in the opinion of the investigator, is a contraindication to participation in this study; for example, acute febrile illness.
- Inability to comply with study visits.
Contact the study team to confirm eligibility.
Sponsors & Collaborators
- Partnership for Clinical Research in Guinea/Partenariat de Recherche Clinique en Guinée (PREGUI)collaborator
- Partnership for Research on Ebola Virus in Liberia (PREVAIL)collaborator
- University Clinical Research Center, Malicollaborator
- Onom Foundation and Liver Centercollaborator
- Mexican Emerging Infectious Diseases Clinical Research Networkcollaborator
- Ina-Respondcollaborator
- Institut National de Recherche Biomédicale. Kinshasa, République Démocratique du Congocollaborator
- National Institute of Allergy and Infectious Diseases (NIAID)lead
Study Sites (11)
National Institute for Biomedical Research/Institut National de Recherche Biomédicale (INRB)
Gombe, Kinshasa City, Democratic Republic of the Congo
Partnership for Clinical Research in Guinea/Partenariat de Recherche Clinique en Guinée (PREGUI)
Conakry, Guinea
National Institute of Health Research and Development (NIHRD), Ministry of Health, Republic of Jakarta - RSU Kabupaten Tangerang
Tangerang, Indonesia
Partnership for Research in Vaccines and Infectious Diseases in Liberia (PREVAIL) - Duport Road Health Center
Monrovia, Liberia
University Clinical Research Center (UCRC) University of Sciences, Techniques and Technologies of Bamako
Bamako, Mali
Hospital Regional de Alta Especialidad "Ciudad Salud" HRAE-CS
Tapachula, Chiapas, Mexico
Hospital General Dr. Manuel Gea Gonzalez (HGMGG)
Mexico City, Mexico
Instituto Nacional de Ciencias Medicas y Nutricion Salvador Zubiran (INCMNSZ),
Mexico City, Mexico
Instituto Nacional de Enfermedades Respiratorias (INER)
Mexico City, Mexico
Hospital General Dr. Aurelio Valdivieso (HGAV)
Oaxaca City, Mexico
Onom Foundation and Liver Center
Ulaanbaatar, 17011, Mongolia
Related Publications (1)
Laverdure S, Kazadi D, Kone K, Callier V, Dabitao D, Dennis D, Haidara MC, Hunsberger S, Mbaya OT, Ridzon R, Sereti I, Shaw-Saliba K; InVITE Study Team. SARS-CoV-2 seroprevalence in vaccine-naive participants from the Democratic Republic of Congo, Guinea, Liberia, and Mali. Int J Infect Dis. 2024 May;142:106985. doi: 10.1016/j.ijid.2024.106985. Epub 2024 Feb 28.
PMID: 38417612RESULT
Related Links
Biospecimen
Blood, and nasal swabs
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Study Officials
- STUDY DIRECTOR
Renee Ridzon, MD
National Institute of Allergy and Infectious Diseases (NIAID)
- STUDY DIRECTOR
Irini Sereti, MD
National Institute of Allergy and Infectious Diseases (NIAID)
- STUDY DIRECTOR
Sally Hunsberger, PhD
National Institute of Allergy and Infectious Diseases (NIAID)
Study Design
- Study Type
- observational
- Observational Model
- ECOLOGIC OR COMMUNITY
- Time Perspective
- CROSS SECTIONAL
- Sponsor Type
- NIH
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
October 26, 2021
First Posted
October 27, 2021
Study Start
August 16, 2021
Primary Completion
August 19, 2025
Study Completion
August 19, 2025
Last Updated
December 18, 2025
Record last verified: 2025-12
Data Sharing
- IPD Sharing
- Will not share