Black swans, by definition, are things that we could not have predicted. That where the power lies -- they change everything. Rare events like viral outbreaks

Black swans, by definition, are things that we could not have predicted. That where the power lies -- they change everything. Rare events like viral outbreaks are probably not in this category. That doesn't mean they aren't impactful or relevant, but OP is right - they're not a black swan, in the definition created by Taleb.