People who receive a Covid booster dose in the UK next month will be among the first in the world to receive Moderna’s dual-variant vaccine, which protects against two strains of the virus. But scientists say there is a misconception that this latest vaccine is an upgrade on what has come before.
The evolution of the Covid virus to be more transmissible and better evade immunity is outpacing even innovative mRNA vaccines such as Moderna’s. The current generation of vaccines remain essential to protect us against severe illness and death. But when it comes to controlling infection, we are in a situation equivalent to running at a steady speed on a treadmill that is accelerating.
