As of 12/22/20
LitCovid is a database of research studies about COVID-19 published by The National Institutes of Health. It is considered to be the most comprehensive, up-to-date resource on COVID-19, providing access to a total of 82,365 studies (so far) in PubMed that is updated daily. The articles are categorized by eight research areas. They are also categorized by journal of publication and geographic area.
Research for providers can be found at Disaster Consult