Infectious disease doctors focus on diagnosing and treating illnesses brought on by microorganisms. While there are many, one such disease would be COVID-19. Infectious Disease specialists diagnose and treat infections in any part of a patient's body, including fever, Aids and HIV, Lyme disease, pneumonia, and tuberculosis.
An excess of neutrophil elastase in the lungs can cause other neutrophil's destruction. These other neutrophils would have defended the body from pneumonia and potential severe illness and death from pneumonia and coronaviruses!
AAT as a protease inhibitor must be considered a naturally occurring protein option to protect patients.