Yes, that is correct.
All manufacturers are paying attention to this, as well as public health systems. As we all know, the virus undergoes evolution. It is actually really important to get ahead of the curve, particularly as some of the variants that have been identified around the world have the potential for a reduction in vaccine protection. I think it is absolutely the necessary and prudent step.
As we've seen, the system is in place to authorize through the regulator expert opinion and then provide advice on whether a booster dose is needed, but we need to prepare for the potential for that to happen.