Influenza
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: (1) Inpatients or outpatients at the First Affiliated Hospital of Sun Yat-sen University, and voluntarily participate in the survey, follow up, and related health care services; (2) Individuals aged 60 years or above; (3) Individuals with stable health status, or in a stable period of chronic diseases (no need for hospitalization or temporary hospital visits recently); (4) Residents in Guangzhou.
Exclusion criteria
Exclusion criteria: (1) Individuals who are in the acute phase of disease requiring hospitalization at the time of recruitment (e.g., infection, fever, acute exacerbation of chronic disease, surgery, etc.). When the acute disease is stabilized, they can be assessed again for the recruitment; (2) Individuals with severe allergic reactions or other adverse reactions to influenza vaccine previously; (3) Individuals with immunosuppression or other immune system diseases who may not be able to produce an adequate response or are at higher risk for complications; (4) Individuals with severe heart diseases, respiratory diseases, or other conditions that may have higher risk of influenza vaccination; (5) Individuals who have recently administered other vaccines or plan to have other vaccines during the trial; (6) Individuals who are using high-dose corticosteroids or other immunosuppressive drugs.
Design outcomes
Secondary
| Measure | Time frame |
|---|---|
| Influenza incidence rate;Influenza-like illness incidence rate;Influenza vaccine efficacy; | — |
Primary
| Measure | Time frame |
|---|---|
| Influenza vaccination rate; | — |
Countries
China
Contacts
Sun Yat-sen University