Scrape travel restrictions for people who can present a positive Covid 19 Antibody Test!

Covid 19 test facilities are overwhelmed,test results take too long to come back. The prospect of going into quarantine after returning from a high risk country keeps travelers away.
Hence, why not consider the Antibody test instead or alternatively?
Here in South Africa, Antibody tests are conducted by a drugstore nurse, with test results available in minutes.
I am certain, this can be done in other countries as well.
As a result, the herd immunity rate in the country visited would increase, with a quarantine down time deemed unnecessary.

Martina Vollmer (South Africa)