COVID-19 Vaccination and Long COVID Symptoms in Hong Kong
Author Information
Author(s): Zheng Chen, Yu Fuk-yuen, Chan Paul Shing-fong, Sun Fenghua, Chen Xiang-Ke, Huang Wendy Ya-Jun, Wong Stephen Heung-Sang, Fang Yuan, Wang Zixin
Primary Institution: The Chinese University of Hong Kong
Hypothesis
Does receiving three doses of COVID-19 vaccines reduce the odds of long COVID symptoms among individuals with a history of SARS-CoV-2 infection?
Conclusion
Receiving three doses of COVID-19 vaccines is associated with lower odds of experiencing long COVID symptoms.
Supporting Evidence
- 40.9% of participants reported any long COVID symptoms.
- 16.1% reported three or more types of long COVID symptoms.
- Older age and female gender were associated with higher odds of long COVID symptoms.
Takeaway
Getting three shots of the COVID-19 vaccine can help people who got sick with COVID-19 feel better and have fewer long-lasting symptoms.
Methodology
This study is a secondary analysis of a cross-sectional online survey conducted among Hong Kong adult residents.
Potential Biases
Self-reported data may introduce recall bias.
Limitations
The study may overestimate long COVID prevalence due to self-selection bias and did not measure the time since last vaccination.
Participant Demographics
Participants were primarily young adults, with 51.3% aged 18-30 and 63.2% female.
Statistical Information
P-Value
0.002
Confidence Interval
0.54, 0.87
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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