NCT05113472

Brief Summary

Limited large-scale studies have been conducted to investigate the adverse effects of COVID-19 vaccine in Latin America, particularly among the healthcare worker (HCW) population in Ecuador. The objective of this study was to assess a cohort of Ecuadorian healthcare workers for adverse reactions following vaccination with the Pfizer-BioNTech vaccine.

Trial Health

87
On Track

Trial Health Score

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

Enrollment
1,291

participants targeted

Target at P75+ for all trials

Timeline
Completed

Started Mar 2021

Shorter than P25 for all trials

Geographic Reach
1 country

1 active site

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

March 1, 2021

Completed
3 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

May 31, 2021

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

May 31, 2021

Completed
5 months until next milestone

First Submitted

Initial submission to the registry

November 8, 2021

Completed
1 day until next milestone

First Posted

Study publicly available on registry

November 9, 2021

Completed
Last Updated

November 9, 2021

Status Verified

November 1, 2021

Enrollment Period

3 months

First QC Date

November 8, 2021

Last Update Submit

November 8, 2021

Conditions

Keywords

adverse reactionsCOVID-19healthcare workersLatin Americavaccination

Outcome Measures

Primary Outcomes (1)

  • Adverse reactions

    Pain, erythema, edema, pruritus, axillary edema, fever, cephalea, malaise, arthralgia, nausea, diarrhea, chills, fatigue, somnolence, syncope, paresthesia, anxiety, dizziness, epigastric pain, generalized rash, generalized pruritus, allergic rhinitis, petechiae, throat itchiness, allergic sinusitis, facial edema, bronchospasm, allergic conjunctivitis, dermatitis, eczema, ocular edema, urticaria, lip swelling, tongue swelling, facial rash, anaphylaxis.

    14 days since administration of either dose

Study Arms (1)

Ecuadorian Healthcare Workers

All individuals involved were part of the first phase of the national COVID-19 vaccination plan in our country and were contacted through a local registry established by a local private university.

Biological: Pfizer-BioNTech COVID-19 vaccine

Interventions

Patients who were administered any dose of the Pfizer-BioNTech COVID-19 vaccine.

Ecuadorian Healthcare Workers

Eligibility Criteria

Age18 Years - 99 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)
Sampling MethodNon-Probability Sample
Study Population

The population included Ecuadorian healthcare workers who received the inoculation with the Pfizer-BioNTech COVID-19 vaccine.

You may qualify if:

  • Ecuadorian nationality
  • Active practice in the medical field
  • Received the Pfizer-BioNTech COVID-19 vaccine

You may not qualify if:

  • Patients who voluntarily refused to participate.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Universidad Espiritu Santo

Samborondón, 092301, Ecuador

Location

MeSH Terms

Conditions

Drug-Related Side Effects and Adverse ReactionsCOVID-19

Interventions

BNT162 Vaccine

Condition Hierarchy (Ancestors)

Chemically-Induced DisordersPneumonia, ViralPneumoniaRespiratory Tract InfectionsInfectionsVirus DiseasesCoronavirus InfectionsCoronaviridae InfectionsNidovirales InfectionsRNA Virus InfectionsLung DiseasesRespiratory Tract Diseases

Intervention Hierarchy (Ancestors)

mRNA VaccinesNucleic Acid-Based VaccinesVaccines, SyntheticRecombinant ProteinsProteinsAmino Acids, Peptides, and ProteinsVaccinesBiological ProductsComplex MixturesCOVID-19 VaccinesViral VaccinesAntigensBiological Factors

Study Design

Study Type
observational
Observational Model
COHORT
Time Perspective
CROSS SECTIONAL
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

November 8, 2021

First Posted

November 9, 2021

Study Start

March 1, 2021

Primary Completion

May 31, 2021

Study Completion

May 31, 2021

Last Updated

November 9, 2021

Record last verified: 2021-11

Locations