HealthGlobal issuesWhy COVID vaccines needed an update 02:17This browser does not support the video element.HealthGlobal issues08/31/2022August 31, 2022US health officials have approved updates to COVID-19 vaccines that target the latest strains of the omicron variant. The tweaked booster shots could be available in the coming days. DW explains how the new COVID vaccines work.Copy linkAdvertisement
