I don't know - but if you need 4 shots of a vaccine in a 2 year period - it certainly appears that an individual does not. The spiel the benefits outweigh the disadvantages - is that a line that is still being used?? By now a real used line - are there still those who like a 'used' line?? Perhaps a little somewhat overused. 'Outweigh the disadvantages' - are there actually advantages and if so, to whom and according to???
On the other hand, the vaccine makers will - it's time for their coffers to be topped up. Happy shareholders for sure - one can only wonder how many have bolstered company profits by lending their arm apart from lending their hand to take some of the profits?? And then there's always the next shot but then I'm just having an educated preemptive guess.
