The COVID-19 disease has mutated as it spreads, research has found, allowing scientists to track its origins and potentially predict future trends. What is believed to be the original strain of the coronavirus, most closely related to that found in pangolins and bats, is termed by the scientists as Type A. According to a University of Cambridge research article, "Mutated versions of 'A' were seen in Americans reported to have lived in Wuhan, and a large number of A-type viruses were found in patients from the U.S. and Australia." Type A appears to have mutated into Type B, which then evolved into "Type C," which is the predominant strain found in Europe. The scientists noticed that Type B was almost exclusively found in East Asia.