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Along_the_Wire If your needing 3 or 4 a year in-between the efficiency waning between each dose that just isn’t good enough is it leaves to much room for issues. A single dose just like flu jab sounds way more efficient to me or even better a covid pill prescribed to anyone who catches covid that would sort so many issues including stupid mandates and hospitals filling up, covid pills will be very important going forward and esp might sort the anti vax issue.