MedTrace Logo

Effect of a Third COVID-19 Booster Among Health Care Workers

NCT05373459 · Status: COMPLETED · Type: OBSERVATIONAL · Enrollment: 3167

Last updated 2024-02-28

No results posted yet for this study

Summary

A new wave of COVID-19 infections, mainly caused by the Omicron/ Delta variant, has been sweeping the globe since the start of 2022. In response, the administration of a third dose of COVID-19 vaccine was considered to address potential waning immunity over time and reduced effectiveness against the Omicron/ Delta variant. The pandemic also resulted in many infections among health care workers (HCWs) and their households. In this study, a retrospective analysis would perform on risk of COVID-19 infection and their outcome in relation to their COVID-19 vaccination history by using the data repository from one of the Hong Kong private hospitals.

HCWs were required to submit a standardized online self-declaration form for report of 1) demographic of the HCWs, 2) symptoms related history and 3) COVID-19 exposure history once they were COVID-19 confirmed by rapid antigen test against COVID-19 and/or polymerase chain reaction (PCR) test for COVID-19. Subsequent follow up such as contact tracing, COVID-19 PCR testing results of these HCWs and status of return to work were captured by the infection control team in a systematic manner.

Conditions

  • COVID-19 Vaccines

Interventions

BIOLOGICAL

Third COVID-19 booster

Third COVID-19 booster

Sponsors & Collaborators

  • Hong Kong Sanatorium & Hospital

    lead INDUSTRY

Principal Investigators

  • Jonpaul Sze Tsing Zee, MBChB · Hong Kong Sanatorium & Hospital

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2022-05-16
Primary Completion
2022-12-31
Completion
2022-12-31

Countries

  • Hong Kong

Study Locations

More Related Trials

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT05373459 on ClinicalTrials.gov