An observational study in Covid-19 Vaccine, sponsored by Hong Kong Sanatorium & Hospital. Completed at 1 site in Hong Kong. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2024-02-28.
Sponsored by Hong Kong Sanatorium & Hospital · Observational
Since the first local case of COVID-19 confirmed on 4 Feb 2020, Hong Kong has already experienced 4 waves of COVID-19 surge, with more than 9000 cases reported. A number of vaccines have been shown to be efficacious against symptomatic and severe infection by inducing neutralizing antibody (NAB) against spike protein of the SARS-CoV-2 virus. However, the duration of protection and longevity of antibody response is unknown.
Health care workers (HCWs) who are planning to receive COVID-19 vaccine will be recruited. The level of antibody against spike protein by different quantitative assays will also be serially measured .
7,990 studies on the registry are indexed under COVID-19; 466 are open to participants now.
This study's enrollment of 480 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.
Healthcare workers of HKSH who plan to receive COVID-19 vaccine
Exclusion Criteria:
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Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
Contraindication
A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Subjects who receive mRNA vaccine BNT162b2.
Biological: BNT162b2 Vaccine
Subjects who receive inactivated vaccine, CoronaVac.
Biological: CoronaVac Vaccine
CoronaVac Vaccine
Covid-19 BNT162b2 Vaccine
Change of IgG Level in the serum of healthcare workers who received COVID-19 vaccine
Change of IgG Level in the serum of healthcare workers who received COVID-19 vaccine at different points during the first six months of vaccination
Time frame: 1 month, 3 months and 6 months post vaccination
Plan to share: No
No publications or documents are linked to this record.
Ran from Mar 2021 to primary completion in Dec 2021, 9 months.
Of 134 industry-sponsored observational studies under COVID-19, half reached primary completion within 10 months of starting (the median), counting those still running; a quarter within 3 and three quarters within 19. This study's 9 months is close to that.
Counting every sponsor, half of 1,774 studies reached it within 13 months; a quarter within 5 and three quarters within 29.
How these figures are worked out, and which studies are left out of them.
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