COVID-19 Immunity and Changes Over Time

Recruiting now

Conditions studied: COVID-19

In brief

The risk of household spread of SARS-CoV-2 hinges on both the transmission dynamics of the virus circulating in the community as well as the seroprotection pattern of constituent members, which can be attributed to vaccination and previous infections. This study is conceptualised to assess the dynamicity of SARS-CoV-2 risk at the household level, through monitoring the pattern of seroprotection, in conjunction with the vaccination coverage, history of infection and exposure risk in the setting of Hong Kong.

Key facts

Study ID

NCT05271669

Run by

Chinese University of Hong Kong

People needed

1350

Starts

2022-06-06

Expected to finish

2027-01-01

Last updated by the study team

2026-03-18

Who can join

Age: any. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• adults of age 18 or above, or children under the age of 18 with informed consent of the legal guardian
• normally residing in Hong Kong
• could communicate in spoken and written Chinese and/or English

You may not qualify if…

• individuals with mental illness
• prisoners

Where it is running

• Shui Shan Lee — Hong Kong, HONG KONG, China (enrolling)

Full record on ClinicalTrials.gov

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