The Korean clusters by Reuters

In February 2020, South Korea announced thousands of coronavirus cases in the space of only a few days, an outbreak that initially pushed their tally of confirmed cases much higher than anywhere else outside of China.

Reuters combed through daily government press releases to build a data-driven account of the spread and also the emergence of patient 31, a single super spreader believed to be the source of thousands of infections. This data was turned into a series of compelling information graphics which vividly explained how this chain of events unfolded.