Analysis: Omicron is a wake-up call for COVID-19 vaccine developers

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By Julie Steenhuysen (Reuters) – Arrival of the highly-mutated Omicron variant is a wake-up call to develop vaccines less susceptible to the rapid changes of the coronavirus, leading virologists and immunologists told Reuters. Most first-generation COVID-19 vaccines target the spike protein on the outer surface of the SARS-CoV-2 virus used to infect human cells. Omicron has prompted alarm among scientists because it has far more mutations than earlier variants, including more than 30 on its spike. Research to determine whether Omicron will evade protection from existing vaccines or prior infec…

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