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Spatial distribution of primary (infectious and noninfectious) and secondary (flight-associated and possibly flight-associated) cases of SARS-CoV-2 aboard flight from Sydney to Perth, Australia, on March 19, 2020. Passengers are identified by place of origin and SARS-CoV-2 lineage as determined by whole-genome sequencing. 1I, primary case, infectious; 1N, primary case, noninfectious; 2F, secondary case, flight associated; 2P, secondary case, possibly flight associated.
