‘The mRNA technology on which the Pfizer and Moderna vaccines rely can be altered in a matter of weeks, and far more easily than the process used to produce flu vaccines. But it would be wise to prepare for this eventuality [a time when the current slew of vaccines become less effective] now and think through not just the technical aspects of updating the vaccines, but the testing, approval and rollout of those vaccines, experts said.
‘Still, the best path forward is to prevent the emergence of new mutations and variants altogether, they said. "Imagine having to do catch-up like this all the time - it's not something desirable," Dr Iwasaki said. "If we can just stop the spread as soon as possible, while the vaccine is very effective, that's the best way."
Read here (New York Times/Straits Times, Jan 22, 2021)
