The COVID-19 Back-to-Normal Study
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The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. |
ClinicalTrials.gov Identifier: NCT04832932 |
Recruitment Status :
Active, not recruiting
First Posted : April 6, 2021
Last Update Posted : January 17, 2023
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- Study Details
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- No Results Posted
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- How to Read a Study Record
During the study, members of different online and offline communities will be followed post COVID-19 vaccination.
Injection-site (local) and systemic reaction data will be assessed on vaccination day and afterwards using either web surveys or personal communication, depending on study participant preference.
Hypothesis to be tested: The safety profile and the magnitude and durability of immune responses to the COVID-19 vaccines as well as adverse reactions depend on health conditions, metabolism and microbiomes.
Condition or disease | Intervention/treatment |
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COVID-19 Vaccines | Biological: COVID-19 vaccines |
Study Type : | Observational |
Actual Enrollment : | 2000 participants |
Observational Model: | Other |
Time Perspective: | Other |
Official Title: | A Phenotypic Study of Safety, Tolerability, Reactogenicity, Immunogenicity, and Virus Shedding With Post-Vaccination Infections of Emergency-Use-Authorized Vaccines Against COVID-19 |
Actual Study Start Date : | January 5, 2021 |
Actual Primary Completion Date : | January 5, 2023 |
Estimated Study Completion Date : | January 5, 2024 |

Group/Cohort | Intervention/treatment |
---|---|
80 years of age or older
Individuals 80-89, 90-99, 100 years of age and older who received COVID-19 vaccine
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Biological: COVID-19 vaccines
Emergency-use authorized COVID-19 vaccines
Other Names:
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60-79 years of age
Individuals 60-69 and 70-79 years of age who received COVID-19 vaccine
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Biological: COVID-19 vaccines
Emergency-use authorized COVID-19 vaccines
Other Names:
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40-59 years of age
Individuals in 40-49, 50-59 age range who received COVID-19 vaccine
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Biological: COVID-19 vaccines
Emergency-use authorized COVID-19 vaccines
Other Names:
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18-39 years of age
Individuals in 18-29, 30-39 age range who received COVID-19 vaccine
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Biological: COVID-19 vaccines
Emergency-use authorized COVID-19 vaccines
Other Names:
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MEBO/PATM
Individuals with present or past MEBO/PATM symptoms who received COVID-19 vaccine
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Biological: COVID-19 vaccines
Emergency-use authorized COVID-19 vaccines
Other Names:
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Chronic Disease
Individuals with self-reported chronic health conditions who received COVID-19 vaccine
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Biological: COVID-19 vaccines
Emergency-use authorized COVID-19 vaccines
Other Names:
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- Adverse reactions/events [ Time Frame: 10 days after any dose of study intervention. ]Percentage of occurrence, types, duration and severity of adverse events occurring within 10 days post-doses 1 and 2
- Long-term adverse events [ Time Frame: Throughout the study period, until 12 months post-final-dose ]Percentage of occurrence, types, duration and severity of adverse events throughout study period
- Incidence of COVID-19 cases [ Time Frame: From 14 days after completion of the 2-dose regimen up to 12 months post-final-dose ]The number of COVID-19 cases occurring <=14 or ≥ 15 days after any dose of study intervention.

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.
Ages Eligible for Study: | 18 Years and older (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | Yes |
Sampling Method: | Probability Sample |
Inclusion Criteria:
- Individuals 18 or older at the time of consent
- Intention to vaccinate and of being available for entire study period
Exclusion Criteria:
- Any illness or condition that in the opinion of the investigator may affect the safety of the participant or the evaluation of any study endpoint.

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT04832932
United States, Florida | |
MEBO Research, Inc | |
Miami, Florida, United States, 33175 | |
United States, Tennessee | |
Kahite | |
Vonore, Tennessee, United States, 37885 | |
Georgia | |
Gabashvili | |
Tbilisi, Georgia | |
Kenya | |
MEBO Research Africa | |
Kilifi, Kenya, 8 010 | |
United Kingdom | |
Mebo Research (Uk) | |
London, England, United Kingdom, W10 5LE |
Principal Investigator: | Irene Gabashvili, PhD | Mebo Research, Inc. |
Publications of Results:
Responsible Party: | Mebo Research, Inc. |
ClinicalTrials.gov Identifier: | NCT04832932 |
Other Study ID Numbers: |
20210103MEBO |
First Posted: | April 6, 2021 Key Record Dates |
Last Update Posted: | January 17, 2023 |
Last Verified: | January 2023 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | No |
Plan Description: | individual participant data will remain confidential, unless specifically requested to be shared by the participant |
Studies a U.S. FDA-regulated Drug Product: | Yes |
Studies a U.S. FDA-regulated Device Product: | No |
Product Manufactured in and Exported from the U.S.: | Yes |
Drug-Related Side Effects and Adverse Reactions Long-term adverse effects Immunogenicity, Vaccine COVID-19 |
COVID-19 Pneumonia, Viral Pneumonia Respiratory Tract Infections Infections Virus Diseases |
Coronavirus Infections Coronaviridae Infections Nidovirales Infections RNA Virus Infections Lung Diseases Respiratory Tract Diseases |