Scientists map COVID-19's journey across the world

The COVID-19 virus 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 virus, most closely related to that found in pangolins and bats, is termed by the scientists as "Type A." This variation and its mutated versions were found in Americans reported to have lived in Wuhan, and commonly 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.

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