@HistoPol @peterbutler @c_merriweather @erictopol
Variants are constantly developing. And hybrids. That is what this virus does - mutate and hybridize. To be far enough different to be a problem takes many months - usually. No guarantees.
It would be ridiculous to do monthly vaccination. But that is just a measure about how inadequate this vaccine is now - six months since it was released.
We need new vaccines more frequently to keep up with the virus. And to be over 90% effective.