Understanding Immunity to the Flu Vaccine in COVID-19 Patients

Understanding Immunity to the Flu Vaccine in COVID-19 Patients

The purpose of this study is to measure immunity to the flu vaccine over time in patients who have had COVID-19 and may have other medical conditions including obesity, type 2 diabetes, chronic fatigue, or long-term COVID-19 symptoms. Adults and children (age 9 to 64) who had been diagnosed with COVID-19 as well as controls without COVID-19 will be invited to participate in this study.

Inclusion Criteria:

• Age 9 through 64 years
• Diagnosed with COVID-19 at least 2 months prior enrollment
• Patients with or without obesity, diabetes, chronic fatigue and/or long term COVID-19 symptoms
• Patients without COVID-19 diagnosis for controls

Exclusion Criteria:

• Received the influenza vaccine less than 4 months ago
• Pregnant or lactating
• Patients with special risks attendant to venipuncture
• Use of immunomodulatory medications that may impact vaccine immune response per clinician's judgment
• Contraindication to the flu vaccine
• Immunodeficiency or autoimmune disease that may impact vaccine immune responses per clinician's judgement