Hong kong study tracks household COVID-19 immunity patterns
NCT ID NCT05271669
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study follows 1,350 people in Hong Kong households to see how their protection against COVID-19 changes over time. Researchers will measure antibodies from both vaccination and past infection. The goal is to understand how household immunity evolves and how it affects the risk of spreading the virus.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
- What this could lead to
- If successful, this study could help public health officials better understand how household immunity changes over time and guide future vaccination strategies.
- What could go wrong
- This is an observational study, not a treatment trial. It will not directly test any new drug or vaccine, and results may not apply to other regions or populations.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Shui Shan Lee
RECRUITINGHong Kong, HONG KONG, 0000, China
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