Region Region of the Americas Country United States of America Parent research recomm 4.1.1 Understanding the clinical spectrum and natural history of human disease, including risk factors (e.g. comorbidities, demographic characteristics and environmental factors, and pre-existing infections), viral replication kinetics and immune respons Research status Completed External Report Link https://www.ncbi.nlm.nih.gov/pubmed/30816684 Public health impact Decrease of morbidity or mortality