Where can I find COVID / LongCOVID studies?

LitCovid www.ncbi.nlm.nih.gov/research/coronavirus

LitCovid is a curated literature hub for tracking up-to-date scientific information about the 2019 novel Coronavirus.

LitCovid is the most comprehensive resource on the subject, providing a central access to 441,472 (and growing) relevant articles in PubMed. The articles are updated daily and are further categorized by different research topics (e.g. transmission) and geographic locations.

Long Covid Learning www.longcovidlearning.org

collects research from scientists worldwide and summarizes the findings to make takeaways more accessible to those outside the research community. Study summaries can be shared as links or images in messages and social media. A project of the World Health Network