The easily spreadable virus can affect people of all ages and have huge consequences during winter.

The NHS autumn booster campaign began on 3 October but Covid vaccines are also available privately.

The trial suggests the jab arms the body with protective antibodies as effectively as separate shots.

Moderna is hoping to make its Covid jab available privately in the UK.

The Covid-19 vaccine firm selects Oxfordshire as the site for a new UK research and production base.

Moderna said it is suing Pfizer and its German partner BioNTech for patent infringement.

The bivalent vaccine will now form part of the booster campaign to be rolled out this autumn.

Moderna's research and manufacturing plant will produce vaccines to combat a range of viruses.