An observational study in COVID-19 Vaccines, sponsored by Hong Kong Sanatorium & Hospital. Completed at 1 site in Hong Kong. Open to participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2024-02-28.
Sponsored by Hong Kong Sanatorium & Hospital · Observational
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.
7,990 studies on the registry are indexed under COVID-19; 466 are open to participants now.
This study's enrollment of 3,167 is above the median of 268 across 3,208 observational studies indexed under COVID-19.
Browse COVID-19 studies →Hong Kong Sanatorium & Hospital is the lead sponsor of 9 studies on the registry; 1 is open to participants now.
Counted across the registry records on this site, refreshed daily.
All full time staff members of the private hospital
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Exclusion Criteria:
Health care workers received less than 3 doses of COVID-19 vaccine
Health care workers received at least 3 doses of COVID-19 vaccine
Biological: Third COVID-19 booster
Third COVID-19 booster
COVID-19 Infection
Number of participants with COVID-19 infected
Time frame: During 1 February - 31 March 2022
Number of days return to work after COVID-19 infection
Number of days return to work after COVID-19 infection
Time frame: During 1 February - 31 March 2022
Plan to share: No
No publications or documents are linked to this record.
Ran from May 2022 to primary completion in Dec 2022, 7 months.
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This study is completed, as verified in Feb 2024. You cannot join it, but the record below documents what was studied.
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Hong Kong Sanatorium & Hospital