Association of Flu specific and SARS-CoV-2 specific CD4 T cell responses in SARS-CoV-2 infected asymptomatic heath care workers |
| |
Affiliation: | 1. Department of Microbiology and Immunology, University of Miami Miller School of Medicine, Miami, FL 33136, USA;2. Department of Otolaryngology, University of Miami Miller School of Medicine, FL 33136, USA |
| |
Abstract: | Influenza vaccination is widely advocated to avoid infection with influenza virus, a serious respiratory pathogen, and this was greatly emphasized during the raging COVID-19 epidemic. We conducted a study for baseline Flu specific immunity in a group of health care workers with documented past SARs-CoV-2 infection (designated COVID+) with mild or no symptoms and compared them with a control group that had not been infected with SARS CoV-2 (COVID-). Concurrently, we examined flu and SARS-CoV-2 specific T cell responses using the AIM (activation induced molecules) assay by flow cytometry. All COVID+ and 40% COVID- participants exhibited AIM responses to SARS-CoV-2 peptides, but only COVID+ were positive for SARs-CoV-2 antibody. Influenza HIN1 antigen specific CD4 T cells were found in 92% COVID+ and 76% COVID- participants and exhibited a strong direct correlation with SARS-CoV-2 specific CD4 T cells. This observation suggests that influenza specific T cell immunity may impact immune responses to SARS-CoV-2. |
| |
Keywords: | Flu and COVID COVID19 SARS-CoV-2 and Influenza COVID and T cell immunity COVID and immune response SARS-CoV-2 antigen specific immunity |
本文献已被 ScienceDirect 等数据库收录! |
|