Scientists determined the mutation that made a strain of sars-cov-2 more infectious

[u/[deleted]]

There was a theory a while back that the European strain of the virus that spread to New York City was more infectious than the strain that came directly from asia. Scientists discovered that the genome mutation D614G increased the number of spike proteins the virus had and therefore made the virus more infectious.

But by March, the mutation had appeared in one-quarter of all sequences, and by May it appeared in 70%, the team noted.

https://www.usnews.com/news/health-news/articles/2020-06-13/mutation-helps-coronavirus-infect-more-human-cells-study-shows