>though experts have cautioned that it’s not clear how long protection from the first shot lasts.
The so called, experts, don't know shit!
They're looking at their human experimental test specimens, who they terrified, to see what happens!
Actually he's right about that, we have a solar cyclic minimum that will lead to global cooling.
The 'Global warming' shtick was to tax and fee the air humanity exhales, so they can further their agenda ripping off humanity.
Same tyrannical behavior, different century.