"Immunity Certificates" Are Coming

So this article speaks of projections, not actual examples of antibodies for covid 19.

"Another technique that has demonstrated success in the past is the collection and refinement of equine plasma. Groups of horses would be immunized with a killed version of SARS-CoV-2, the COVID-19 virus, and develop antibodies in response. Because horses are larger animals, they produce more plasma than humans that can, in turn, be purified just as we purify that of convalescents."

Http://www.forbes.com/sites/williamhaseltine/2020/04/06/passive-immunity-a-short-and-long-term-solution-to-treatment-and-prevention-of-covid-19/amp/