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Companies are updating vaccines and testing them on people to prepare for whatever comes next in the

  • 11/X Fortunately, it’s pretty fast to tweak & test our existing #COVID19 #vaccines for #Omicron or another #covidvariant. In fact, #vaccine developers have been planning for this possibility for a long time because viruses are well-known to evolve. https://t.co/21Fe1t4iDH - view on twitter