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Background: The post COVID-19 health condition of Chinese residents infected with Omicron is not clear after the change of epidemic prevention policies. This study aimed to clarify the epidemiology and associated factors about health status of rehabilitation patients. Methods: A quick questionnaire study based on C19-YRSm was conducted in mainland China through internet from May 1, 2023, to May 7, 2023. Chinese native speakers infected with Omicron variant agreed to participate were included. Persisting symptom and living habits were simultaneously inquired. Logistic regression analysis was used to identify the associated factors. Results: In this study 753 individuals were included. Of whom 57.90% were males, 89.38% did not seek medical service, 99.47% recovered within less than 120 days. Breathlessness (47.68%), cognitive impairment (44.89%), Anxiety/mood changes (33.20%), pain/discomfort (32.94%), fatigue or tiredness not improved by rest (32.27%) and post-exertional malaise (30.01%) were the top reported key symptoms. Less than 10% respondents reported functional limitations. The prevalence of fever was reported greater than that of other symptoms, with dry eyes at 14.87%, appetite change at 14.34%, and hair loss at 12.22%. Middle age (OR: 2.353, 95%CI: 1.171 ~ 4.729), underlying diseases (OR: 2.293, 95%CI: 1.216 ~ 4.324), severe key symptom (OR: 6.168, 95%CI: 1.376 ~ 27.642) and at least one other symptom (OR: 1.847, 95%CI: 1.225 ~ 2.718)during the recovery were the risk factors of poor overall health after infection (current overall health score <8; 74.10%), while daily exercise in recovery period (OR: 0.457, 95%CI: 0.229 ~ 0.913), a low-fat diet (OR: 0.600, 95%CI: 0.401 ~ 0.898) and the recovery time from 2 to 4 months (OR: 0.639, 95%CI: 0.445 ~ 0.918) were the protective factors. Conclusion: This is the first time to use the C19-YRSm scale to evaluate the health status in China. The study revealed prevalence of persistent symptoms within 120 days after Omicron onset. [ABSTRACT FROM AUTHOR]