The Oxford/AstraZeneca vaccine may have a "substantial effect" on transmission of coronavirus, and a three-month gap between doses does not lower protection, according to a report.
Second World War veteran Captain Sir Tom Moore, who inspired the nation in lockdown by raising millions for the NHS, has died aged 100, his family says.
COVID vaccine appointments have been cancelled, flights have been suspended and schools and roads are closed across the northeastern US after widespread heavy snowfall.
