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New COVID-19 Vaccine

OPERATION VACCINATION A nurse prepares a dose of the Oxford-AstraZeneca vaccine. It was approved for use in the U.K. on December 30. MATTHEW HORWOOD—GETTY IMAGES

A new COVID-19 vaccine has been approved for the United Kingdom (U.K.). Several other countries have also approved the vaccine. It could help contain the spread of the disease worldwide.

The vaccine was developed by the University of Oxford and the drug company AstraZeneca. It costs governments much less than other COVID-19 vaccines. It's also easier to transport and store. Other vaccines must be kept frozen. This one can be stored longer in a normal fridge.

Helen Fletcher is a professor of immunology in London. She calls the vaccine's approval "a turning point for the pandemic." She says it was "developed to have global impact that includes people living in the . . . poorest regions of the world."

The vaccine's makers hope to have enough for 20% of the world's population in 2021.