…with it not starting for another three days, and no restrictions on U.S. citizens nor on tourists from places like Belgium and Hong Kong where the variant has already spread, it’s likely a case of shutting the barn door after the horse has fled. The only semi-reliable way to prevent it from reaching the U.S. would be a 100% travel ban from anywhere…and, even then, there are pretty good odds that it already arrived here before being identified in South Africa.