A woman hold her arm after receiving Covishield COVID-19 vaccine at a vaccination center in Mumbai, India, Monday, November 29, 2021. The emergence of the new omicron variant and the world’s desperate and likely futile attempts to keep it at bay are reminders of what scientists have warned for months: The coronavirus will thrive as long as vast parts of the world lack vaccines. (Photo by Rafiq Maqbool/AP Photo)
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