A study released Tuesday by the U.S. Centers for Disease Control and Prevention shows an extra shot of a COVID-19 vaccine provides solid protection against severe disease, hospitalization and death.

The federal health agency followed more than 400,000 adults in Los Angeles who were infected with either the delta or omicron variants of the coronavirus between November and this past January. Researchers found that unvaccinated residents who were infected with the delta strain between November and December were 83 times more likely to be hospitalized than those who had been vaccinated and gotten the booster shot.

Meanwhile, the study found that in January, when omicron overtook delta as the primary variant in Los Angeles, unvaccinated individuals were more than three times as likely to be infected and 23 times more likely to be hospitalized than people who were fully vaccinated and received a booster.

Elsewhere, France becomes the latest European country to relax its coronavirus restrictions. Effective Wednesday, mandatory outdoor mask-wearing will end, and audience capacity limits for concerts halls, sporting matches and other events are being phased out, according to a report Wednesday by Agence France-Presse. The relaxed mitigation standards are taking effect despite France reaching a record-setting number of new daily cases last month.

France’s actions come a day after Denmark and Norway officially lifted most of their  pandemic restrictions. Britain, Ireland and the Netherlands also have dropped most of their restrictions and containment measures.

Some information for this report came from Agence France-Presse.
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