Check the study: https://www.cdc.gov/mmwr/volumes/69/wr/mm6945a5.htm https://www.cdc.gov/mmwr/volumes/69/wr/mm6945a5.htm It looks like just contact tracing he

Check the study: https://www.cdc.gov/mmwr/volumes/69/wr/mm6945a5.htm https://www.cdc.gov/mmwr/volumes/69/wr/mm6945a5.htm It looks like just contact tracing here, not genome sequencing. The patient in question is A2 and the study does not say whether they ever tested positive or had symptoms.