- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04868448
COVID-19 Vaccine Effectiveness Among Health Workers in Georgia (COV19HWVE_GE)
Cohort Study to Measure COVID-19 Vaccine Effectiveness Among Health Workers in Georgia
Study Overview
Detailed Description
Many critical questions remain about the effectiveness of COVID-19 vaccines in real-world settings. These questions can only be answered in post-introduction vaccine effectiveness studies.
This is a prospective one-year cohort study of hospital-based health workers in Georgia to evaluate the effectiveness of COVID-19 vaccine in preventing laboratory-confirmed SARS-CoV-2 infection and COVID-19 disease. Health Workers (HWs) are the target population in this study because they have been prioritized to be the first group to receive the vaccine in Georgia and offer an early opportunity to evaluate the vaccine in a population in which it is critical that an effective vaccine be deployed.
HWs should be enrolled after the study protocol is approved by the local ethical review committee. All HWs eligible to be vaccinated with COVID-19 vaccine can be enrolled in the study, including those who intend to get vaccinated, those who do not plan on getting vaccinated, and those who are not sure. For HWs who have already been vaccinated at enrolment, priority will be given to those who have received their first COVID vaccine no more than 4 days prior to the date of enrolment. The target enrolment is 1600 participants.
At enrolment, study participants will complete a baseline enrolment survey about demographics, clinical comorbidities, and work and community-related behaviors related to infection risk, and recent symptoms. In addition, a baseline serology will be collected from participants at enrolment.
For study participants who have not received their first COVID-19 vaccine at enrolment but receive their first vaccine 14 days or more after enrolment, an additional blood sample will be collected. In addition, a brief symptom questionnaire about recent symptoms will be administered.
During the course of the study, participants will be actively followed for suspected COVID-19 infection. Participants will be asked to complete weekly symptom questionnaires to screen for clinically significant COVID-19. Participants who meet a suspected case definition, defined according to the Georgian national case definition should provide a respiratory sample which will be collected by trained HW. Respiratory specimens will be tested for SARS-CoV-2 by RT-PCR.
All or subset of positive samples from study participants will undergo genetic sequencing, resources permitting.
Finally, after 3, 6, 9 and 12 months of the study, as resources permit, serology will be collected from participants. Serology will be tested for antibodies to SARS-CoV-2 by tests for vaccine-induced antibodies and antibodies that result from natural infection.
Vaccine effectiveness should be analysed as described in the analysis section below.
In addition to the final analysis at the end of the one-year period, interim quarterly (every three months) analyses will be undertaken.
Study Type
Enrollment (Anticipated)
Contacts and Locations
Study Contact
- Name: Khatuna C Zakhashvili, MD
- Phone Number: +995599317079
- Email: episurv@ncdc.ge
Study Contact Backup
- Name: Lia Sanodze, MD
- Phone Number: +995595993804
- Email: l.sanodze@ncdc.ge
Study Locations
-
-
-
Tbilisi, Georgia, 0145
- Recruiting
- The Bokeria Tbilisi Referral Hospital
-
Contact:
- Nona C Beradze, MD
- Phone Number: +995595956163
- Email: n.beradze@ncdc.ge
-
Contact:
- Rusudan Chlikadze, MD
- Phone Number: +995595956155
- Email: r.chlikadze@ncdc.ge
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Tbilisi, Georgia, 0160
- Recruiting
- Academician N. Kipshidze Central University Clinic
-
Contact:
- Tamar C Sulkhanishvili, MD
- Phone Number: +995595956165
- Email: t.sulkhanishvili@ncdc.ge
-
Contact:
- Ketevan Sanadze, MD
- Phone Number: +995595956140
- Email: k.sanadze@ncdc.ge
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Tbilisi, Georgia, 0160
- Recruiting
- The Bochorishvili Clinic
-
Contact:
- Teona Kashibadze, MD
- Phone Number: +995591152535
- Email: t.kashibadze@ncdc.ge
-
Contact:
- Irma Burjanadze, MD
- Phone Number: +995595956121
- Email: i.burjanadze@ncdc.ge
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Tbilisi, Georgia, 0160
- Recruiting
- The Infectious Diseases and AIDS Center
-
Contact:
- Teona Kashibadze
- Phone Number: +995591152535
- Email: t.kashibadze@ncdc.ge
-
Contact:
- Irma Burjanadze
- Phone Number: +995595956121
- Email: i.burjanadze@ncdc.ge
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Tbilisi, Georgia, 0186
- Recruiting
- The Caucasus Medical Centre
-
Contact:
- Irina C Kalandadze, MD
- Phone Number: +995595956151
- Email: i.kalandadze@ncdc.ge
-
Contact:
- Pikria Shavreshiani, MD
- Phone Number: +995595424314
- Email: p.shavreshiani@ncdc.ge
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-
Ajara
-
Batumi, Ajara, Georgia
- Recruiting
- The Batumi Republican Clinical Hospital
-
Contact:
- Nana Jintcharadze, MD
- Phone Number: +995577278729
- Email: nanajintcharadze22@gmail.com
-
Contact:
- Lia Varshalomidze, MD
- Phone Number: +995577278728
- Email: liavarshalomidze@gmail.com
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
Description
Inclusion Criteria:
All HWs eligible to receive the COVID-19 vaccination according to the national guidelines of Ministry of Health (MoH).
- HWs working at Batumi Republican Clinical Hospital, Vakhtang Bochorishvili Clinic, Academician N. Kipshidze Central University Clinic, Bokeria Tbilisi Referral Hospital, Caucasus Medical Centre, and Infectious Diseases and AIDS Center.
- HWs who have already been vaccinated with a single dose of vaccine against COVID-19 as part of the early COVID-19 vaccine rollout can be included.
Exclusion Criteria:
- HWs who are not eligible for COVID-19 vaccination or have a contraindication to vaccination should not participate in the study.
- HWs who do not work at above mentioned hospitals
- HWs under 18 years of age.
- HWs who have already been vaccinated with two doses of vaccine against COVID-19 before enrolment
Study Plan
How is the study designed?
Design Details
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
---|---|
Vaccinated participants
Participants who received 1or 2 doses of the Covid-19 vaccines
|
Observation of individuals who received one or more doses of covid-19 vaccines.
|
Unvaccinated participants
Participants who have not received any dose of the Covid-19 vaccines
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Covid-19 vaccine effectiveness
Time Frame: 12 months
|
any SARS-CoV-2 laboratory confirmation by RT-PCR in an asymptomatic, or symptomatic patient
|
12 months
|
Collaborators and Investigators
Collaborators
Investigators
- Principal Investigator: Khatuna C Zakhashvili, MD, National Center for Disease control and Public Health
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Anticipated)
Study Completion (Anticipated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- CERC.0097B
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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