The third dose increases immunity so after the 4th dose you are protected. Once 80% of the population have received the 5th dose, the restrictions can be relaxed, as the 6th dose stops the virus spreading. I am calm and believe the 7th dose will solve our problems and we have no reason to fear the 8th dose. The clinical phase of the 9th dose confirms that the antibodies remain stable after the 10th dose. The 11th dose guarantees that no new mutations will develop so there is no reason to criticize the 12th dose.