An engineer displays an experimental vaccine for the COVID-19 during testing at the Quality Control Laboratory at Sinovac Biotech facilities in Beijing in this April file photo. A total of 27 drugmakers are working on vaccines for the disease. less An engineer displays an experimental vaccine for the COVID-19 during testing at the Quality Control Laboratory at Sinovac Biotech facilities in Beijing in this April file photo. A total of 27 drugmakers are … more Photo: Nicolas Asfouri, AFP Via Getty Images Photo: Nicolas Asfouri, AFP Via Getty Images Image 1 of / 3 Caption Close Image 1 of 3 An engineer displays an experimental vaccine for the COVID-19 during testing at the Quality Control Laboratory at Sinovac Biotech facilities in Beijing in this April file photo. A total of 27 drugmakers are working on vaccines for the disease. less An engineer displays an experimental vaccine for the COVID-19 during testing at the Quality Control Laboratory at Sinovac Biotech facilities in Beijing in this April file photo. A total of 27 drugmakers are … more Photo: Nicolas Asfouri, AFP Via Getty Images Why scientists are worried about a ‘Warp Speed’ COVID-19 vaccine 1 / 3 Back to Gallery As the… Read full this story
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