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johnson & johnson

  • The one-dose option worked better in the U.S. — 72% effective against moderate to severe COVID-19 — compared with 66% in Latin America and 57% in South Africa, where a more contagious mutant virus is spreading.

    Johnson & Johnson asked U.S. regulators Thursday to clear the world’s first single-dose COVID-19 vaccine, an easier-to-use option that could boost scarce supplies.

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