Ah, actually no scientist ever even successfully isolated sample of SARS-C0V-2, someone in South Korea claimed they did but it couldn't be replicated to fulfilling or satisfying Koch's postulate. If they had isolated the virus, they would have been antibody test.
This C0VID thing is all hoax from the gitgo.
Neither is such C0VID-19 asymptomatic transmission.
Somebody emailed me a meme claiming that. Not sure how it got started when there the technology in use for distinguishing the different strains have been around for a long time.
https://www.cdc.gov/coronavirus/2019-ncov/variants/variant-info.html
https://www.cdc.gov/coronavirus/2019-ncov/variants/cdc-role-surveillance.html