@sda That's always been a risk with oral vaccine. When using an attenuated virus, it's a balancing act between providing protection to most vs having a small percentage get infected from a random mutation in the attenuated input. With polio counts so low, I'm surprised they're using attenuated virus.
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@sda
That's always been a risk with oral vaccine. When using an attenuated virus, it's a balancing act between providing protection to most vs having a small percentage get infected from a random mutation in the attenuated input. With polio counts so low, I'm surprised they're using attenuated virus.