mRNA Covid vaccines can be frozen again, say Catalan researchers
Investigation from Hospital del Mar and Pompeu Fabra University opens door to sending jabs to developing countries
pfizer-biontech
Vaccination for over 80s expected to begin next week
Non-medical essential workers such as pharmacists and physiotherapists already being given AstraZeneca dose
Guide to differences between the Pfizer-BioNTech, Modern and Oxford-AstraZeneca vaccines
Oxford-AstraZeneca jab expected to be approved and rolled out in February