That shows your ignorance on understanding antibodies.
This paper has not been peer reviewed, it has been published on an internal journal of INT, which editor is an author. And most likely they're just seeing cross-reactivity in the T-Cells of other corona viruses.
That shows your ignorance on understanding antibodies.
Those sneaky italian scientistis, always trying to take the blame for a pandemic for no reason!
Cross-reactivity? Fuhgeddaboudit