Fourth shot protects against severe Omicron outcomes; COVID may increase risk of rare eye blood cells
A health worker prepares a dose of Pfizer-BioNTech’s coronavirus disease (COVID-19) vaccine as the COVID-19 vaccination campaign continues amid talks of a fourth dose for high-risk groups including those over the age of 60, in Malcha shopping mall, Jerusalem, December 22, 2021. REUTERS/Ammar Awad Register now for FREE unlimited access to Reuters.com Register April 14 … Read more