Immunity + virus evolution + non-exposed vulnerable are dead. Annual booster uncertain value.
Open question: do all coronaviruses cause a degree of vascular brain injury? How does that accumulate over a lifespan?
Immunity + virus evolution + non-exposed vulnerable are dead. Annual booster uncertain value.
Open question: do all coronaviruses cause a degree of vascular brain injury? How does that accumulate over a lifespan?