Suzana, a 22-year-old Guarani woman, smiles during an interview in the Mata Verde Bonita village in Marica, Rio de Janeiro state, Brazil, Thursday, February 25, 2021, where healthcare workers are making the rounds with coolers containing doses of China's Sinovac COVID-19 vaccine as part of a mass immunization program aimed at inoculating all of Rio’s 16 million residents by the end of the year. (Photo by Bruna Prado/AP Photo)
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