Briefly answer each bullet point. Thank you. • What is injected into your body in COVID-19 vaccines such as Pfizer and Moderna? • What "instructions" do COVID-19 vaccines provide our body cells? • Based on the first question ("What is inject..."), how are these COVID-19 vaccines different from the annual flu vaccine? • Briefly describe Katalin Kariko's contribution to the development of COVID-19 vaccines. Related to this, when did she first begin her work?

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