FILE PHOTO: A health care worker fills up a syringe with a dose of Moderna's COVID-19 vaccine for a booster shot at the vaccination reference center at the Epidemiology, Biostatistics and Prevention Institute (EBPI) in Zurich, Switzerland November 17, 2021. REUTERS/Arnd Wiegmann
BRUSSELS (Reuters) - European Union governments kicked off a debate on Tuesday about how long vaccines are effective against COVID-19 and whether evidence of a booster dose will be required to maintain free travel across the bloc as cases spike.
The executive European Commission is due to present a proposal this week to coordinate free movement using COVID-19 passes, after Austria became the first country in western Europe on Monday to reimpose a lockdown since vaccines were rolled out.
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