(CNN) A new genetic study suggests the coronavirus was carried into California several times by travelers, and that the state missed several opportunities to use contact tracing to stop further spread. In that case, contact tracing and quick isolation of the new cases stopped any further spread, he said. For the study, Chiu and colleagues examined viral samples taken from 36 patients in nine California counties. "We found out that there have been multiple introductions into California of different lineages of the virus," Chiu said. The findings, he said, show many missed opportunities to stop the virus when it was seeded multiple times into California.

Source: CNN June 09, 2020 00:22 UTC