> The surface proteins that the measles virus uses to enter cells are ineffective if they suffer any mutation, meaning that any changes to the virus come at a major cost.
https://www.sciencedaily.com/releases/2015/05/150521133628.h...
Since the COVID shots doesn't prevent catching and transmitting the virus, at least the current shots aren't going to achieve herd immunity / get rid of COVID.
AstraZeneca vaccine's lead researcher and head of the Oxford Vaccine Group, Andrew Pollard, stated that the "idea of achieving herd immunity is mythical" and "not a possibility" because "vaccinated people can still be infected and transmit the virus". He also warned against making any vaccination policies and programs based on the idea of herd immunity because the virus may mutate to an even more transmissible variant among vaccinated populations.
https://www.cnbc.com/2021/08/12/herd-immunity-is-mythical-wi...