Article frm CEO Sept 28/21 Covid Vax Need T-Cells + AntbodieBIOV can do that. And with CoviDHT test, can perform a simple, inexpensive test to read the actual T-Cell response ... Typically a T-cell response lasts much much longer than Antibodies. They are applying for the IND via an EUA submission. What a dual their Covid Vax + this simple test to see the degree of T-Cells but how long they will last.
https://ceo.ca/@newswire/why-some-experts-say-for-an-effective-covid-vaccine