The study aim is to determine the relationship between COVID-19 infection and epithelial cell expression of TSLP. Two cohorts will be used. Cohort One will include 100 hospitalized patients with Covid-19, and 100 hospitalized patients without Covid-19. Cohort 2 will include mild/moderate asthmatics and healthy controls with bio-banked biopsy material used from donors who have previously consented for samples to be used for future research.
To assess if TSLP expression by airway epithelial cells following COVID-19 infection regulates viral load and disease severity.