
Number of registered COVID-19 studies worldwide Apr 2020 - Mar 2021, by region
According to ClinicalTrials.gov, as of March 10, 2021, there were nearly five thousand studies registered worldwide which are investigating the coronavirus disease (COVID-19). This statistic shows the total number of results from a search of "covid-19" on ClinicalTrials.gov database, from April 2020 to March 2021, by world region.