If this is so different from Covid, why does the same test pick it up?
“ If this is so different from Covid, why does the same test pick it up? ”
It’s different from the point of view of the antibodies. Since the spike has mutated significantly in the delta, the antibodies from the vaccine are not able to bind to the spike and the virus is able to escape. In that respect it’s different. Otherwise the rest of the virus is much the same.