Intervention, Prognosis and Mechanism of Covid-19 Infection in Patients With Underlying Diseases

Study Overview
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Brief Summary
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The goal of this observational study is to explore the influence of Covid-19 infection and risk factors of severe outcomes in vulnerable population including patients with chronic liver disease, malignant tumor, autoimmune disease, medical staff. The main questions it aims to answer are: The clinical characteristics of vulnerable population after Covid-19 infection. Risk factors for severe illness in vulnerable groups after infection with the Covid-19. The impact of Covid-19 infection on the progression of underlying diseases. Information of participants will be collected such as gender, age, underlying diseases, medication status, vaccination status, clinical and biochemical indicators. Researchers will compare the mild and severe outcomes after Covid-19 infection to identify the truly vulnerable population and explore the potential mechanism and intervention for these population.

Official Title
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Research on the Intervention, Prognosis and Mechanism of Novel Coronavirus Infection in Patients With Underlying Diseases

Conditions
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Chronic Liver Disease, Malignant Tumor, Autoimmune Diseases, Healthy

Intervention / Treatment
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* Other: underling disease


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Sign the informed consent form before enrollment, and be able to complete the research according to the requirements of the research protocol. Enrolled patients need to have basic diseases, including chronic liver disease, chronic kidney disease, chronic lung disease, solid tumors, AIDS, rheumatic immune diseases, diabetes, etc. When entering the group, patients with new crowns need to be confirmed by evidence of a positive test for new coronavirus nucleic acid (CT value <35) or a positive test for new coronavirus antigen. Exclusion Criteria: Participate in clinical trials of other investigational drugs or medical devices within 3 months before screening, and take experimental drugs or use medical devices. Positive pregnancy test during lactation or screening period. Subjects who, in the investigator's opinion, have other factors that are not suitable for participating in this study.

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 100 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| chronic liver disease<br>No additional interventions for this group. | Other: underling disease<br>* Nowadays Covid-19 virus has become milder than before however severe outcomes still happen in people with underlying diseases after infection. For example, previous research indicated cirrhosis was an independent predictor for COVID-19 mortality. More efforts shoud be make to explore the association between underlying diseases and severe COVID-19.<br>|
| malignant tumor<br>No additional interventions for this group. | Other: underling disease<br>* Nowadays Covid-19 virus has become milder than before however severe outcomes still happen in people with underlying diseases after infection. For example, previous research indicated cirrhosis was an independent predictor for COVID-19 mortality. More efforts shoud be make to explore the association between underlying diseases and severe COVID-19.<br>|
| autoimmune disease<br>No additional interventions for this group. | Other: underling disease<br>* Nowadays Covid-19 virus has become milder than before however severe outcomes still happen in people with underlying diseases after infection. For example, previous research indicated cirrhosis was an independent predictor for COVID-19 mortality. More efforts shoud be make to explore the association between underlying diseases and severe COVID-19.<br>|
| medical staff<br>No additional interventions for this group. | Other: underling disease<br>* Nowadays Covid-19 virus has become milder than before however severe outcomes still happen in people with underlying diseases after infection. For example, previous research indicated cirrhosis was an independent predictor for COVID-19 mortality. More efforts shoud be make to explore the association between underlying diseases and severe COVID-19.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| All-cause mortality in patients with underline disease after Covid-19 infection. | All-cause mortality is a measure of the total number of deaths from any cause. | 30 days | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Severe disease in patients with underline disease after Covid-19 infection. | Severe disease include severe Covid-19 and/or progression of underlying disease. | 48weeks |