Europe is rolling out COVID-19 booster shots, hoping to protect the most vulnerable as virus infections surge and threaten to cause another disastrous winter.
Coronavirus
Bloomberg: Europe embraces booster vaccines to fight COVID-19
Passengers arriving from countries listed as COVID-19 red zones register for coronavirus tests upon their arrival at Roissy Charles de Gaulle airport in Roissy near Paris, on April 25, 2021.
