My feeble memory was relaying what I read this morning in the daily YLE update, she's not into travel bans.
"Nonetheless, it shouldn’t be a surprise that Omicron in the U.S. Once we identify a variant (even if it was very early like Omicron), it’s already spreading under our radar. We live in a very globalized and connected world.
We actually saw this prediction with flight patterns. Dr. Dick Brockmann and his team did some interesting calculations based on the world aviation network from August 2021. They estimated the likelihood of a passenger from South Africa or Botswana traveling to another country and exiting the airport (i.e. not a layover). Based on their calculations, U.S. had the second highest probability of a traveler (3.355%) in the world behind Zimbabwe. This means that out of 1000 passengers from South Africa/Botswana, 34 were expected to land in the U.S. You’ll also notice that San Francisco airport made it in this figure too. There are a ton of limitations to this analysis, but interesting nonetheless."
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