People wear masks during the COVID-19 pandemic outside a grocery store where they expect it to open in Havana, Cuba, on Tuesday, October 12, 2021. Cuban scientists and health officials reported Wednesday, November 3, 2021 that the Abdala vaccine, of national production, prevents the development of serious disease due to COVID-19 by 92% and death by 90.7%. (Ramon Espinosa / AP)
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