FILE — In this Friday, March 26, 2021 file photo, healthcare workers queue to receive the Johnson & Johnson COVID-19 vaccine at a vaccination centre at Chris Hani Baragwanath Academic Hospital in Johannesburg, South Africa. South Africa has suspended giving the Johnson & Johnson vaccine as a "precautionary measure" following the FDA decision in the United States to pause the use of the vaccine while very rare blood clot cases are examined. (AP Photo/Themba Hadebe, file)
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