Britain's National Health Service (NHS) has said the country will this week begin offering vaccinations to children aged between five and 11 who are most at risk from coronavirus, Reuters reports.

NHS England said children in the cohort who were in a clinical risk group or who live with someone who is immunosuppressed would be able to get a first Covid-19 shot, in line with advice issued last month by the Joint Committee on Vaccine and Immunisation.

Children will be offered two 10 microgramme doses of the Pfizer-BioNTech shot, which is a third of an adult dose.