3 ms·

This is a Booster. I'm sure they could develop a primary vaccine that starts with this strain as the base.

• Izkata 4y ago
  In case you weren't aware, the primary shots and boosters (up until these two) were all the same shot. These also work the same as those. The only reason it's not being treated as a primary shot is it wasn't tested as such (and probably also marketing purposes).