Because COVID-19 is a novel coronavirus, we are continuing to learn about how it works and what effects it has on the human body. The nature of the scientific method means that as we learn more, guidance will change.
By Whatiguana - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=39341560
Scholarly publishing is often a slow process, due to the length of time the research itself may take coupled with thorough peer review. Peer review is a central part of the process because it means that experts in the field have evaluated the research and found that it merited publication, acting as a form of quality control.
The Long Road to Publishing a Scientific Paper (Click image or title to see full-sized image.)
Comic-style infographic created by evolutionary biologist Kathryn Everson, PhD, to explain the academic publishing process. Original images are freely available for download on her Flickr page.
Text-only is available in the document below.