Is this number really true? I remember a study from Italy (on Dr. John Campbell's channel) that there were 0 death from Covid* in people under 40 that were heal

Is this number really true? I remember a study from Italy (on Dr. John Campbell's channel) that there were 0 death from Covid* in people under 40 that were healthy. *Covid was the cause of death, not sepsis and btw he tested positive for Covid.