NCT05096091

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

93
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
5,399

participants targeted

Target at P75+ for all trials

Timeline
Completed

Started Aug 2021

Longer than P75 for all trials

Geographic Reach
7 countries

11 active sites

Status
completed

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

Completed
2 months until next milestone

First Submitted

Initial submission to the registry

October 26, 2021

Completed
1 day until next milestone

First Posted

Study publicly available on registry

October 27, 2021

Completed
3.8 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

August 19, 2025

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

August 19, 2025

Completed
Last Updated

December 18, 2025

Status Verified

December 1, 2025

Enrollment Period

4 years

First QC Date

October 26, 2021

Last Update Submit

December 16, 2025

Conditions

Keywords

SARS-CoV-2 Infection

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

Age18 Years+
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)
Sampling MethodProbability Sample
Study Population

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

Study Sites (11)

National Institute for Biomedical Research/Institut National de Recherche Biomédicale (INRB)

Gombe, Kinshasa City, Democratic Republic of the Congo

Location

Partnership for Clinical Research in Guinea/Partenariat de Recherche Clinique en Guinée (PREGUI)

Conakry, Guinea

Location

National Institute of Health Research and Development (NIHRD), Ministry of Health, Republic of Jakarta - RSU Kabupaten Tangerang

Tangerang, Indonesia

Location

Partnership for Research in Vaccines and Infectious Diseases in Liberia (PREVAIL) - Duport Road Health Center

Monrovia, Liberia

Location

University Clinical Research Center (UCRC) University of Sciences, Techniques and Technologies of Bamako

Bamako, Mali

Location

Hospital Regional de Alta Especialidad "Ciudad Salud" HRAE-CS

Tapachula, Chiapas, Mexico

Location

Hospital General Dr. Manuel Gea Gonzalez (HGMGG)

Mexico City, Mexico

Location

Instituto Nacional de Ciencias Medicas y Nutricion Salvador Zubiran (INCMNSZ),

Mexico City, Mexico

Location

Instituto Nacional de Enfermedades Respiratorias (INER)

Mexico City, Mexico

Location

Hospital General Dr. Aurelio Valdivieso (HGAV)

Oaxaca City, Mexico

Location

Onom Foundation and Liver Center

Ulaanbaatar, 17011, Mongolia

Location

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.

Related Links

Biospecimen

Retention: SAMPLES WITH DNA

Blood, and nasal swabs

MeSH Terms

Conditions

COVID-19

Condition Hierarchy (Ancestors)

Pneumonia, ViralPneumoniaRespiratory Tract InfectionsInfectionsVirus DiseasesCoronavirus InfectionsCoronaviridae InfectionsNidovirales InfectionsRNA Virus InfectionsLung DiseasesRespiratory Tract Diseases

Study Officials

  • 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 DIRECTOR

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

Locations