Moderna has detailed some of the steps it’s taking to ensure that its vaccine remains effective in the face of emerging strains of the SARS-CoV-2 virus that leads to COVID-19. These include testing how adding a second booster, for a total of three shots, works with its existing COVID-19 vaccine, and also developing a strain-specific variant designed to target spike proteins on the new variants of the virus that were first identified in the UK and in South Africa.
The company is pursuing these measures “out of an abundance of caution,” the biotech firm said in a press release, …
