Unknowing introduction of a virus being 'biological warfare' would imply that people flying out of Wuhan in late 2019 were actually engaging in biological warfa

Unknowing introduction of a virus being 'biological warfare' would imply that people flying out of Wuhan in late 2019 were actually engaging in biological warfare. That's a stretch. There's no world, no matter how well intentioned Columbus may have been in an alternate universe, where disease doesn't devastate immunologically naive populations.