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Health

Who decides if the world needs COVID-19 booster shots?

Vaccine makers Moderna Inc and Pfizer Inc, with its German partner BioNTech, have been vocal in their view that the world will soon need COVID-19 booster shots to maintain high levels of immunity. What is less clear, however, is who should make that decision - and based on what evidence.

Michelle Chester, director of employee health services at Northwell Health, holds a bottle containing the Moderna COVID-19 vaccine at Northwell Health's Long Island Jewish Valley Stream hospital in Valley Stream, N.Y., on Monday, Dec. 21, 2020. (Eduardo Munoz/Pool via AP)

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Who will be the first to get COVID-19 vaccines? AP Illustration/Peter Hamlin

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This undated electron microscope image made available by the U.S. National Institutes of Health in February 2020 shows the Novel Coronavirus SARS-CoV-2, orange, emerging from the surface of cells, green, cultured in the lab. (NIAID-RML via AP)

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