Peace got it right. They are working on a shot version as well, to come after the nasal spray one.

The company has just been bought by a much larger company, which is GREAT news. It means a) it's very promising and b) there will be more money and better facilities for testing.

It won't make a difference whether you are a secretor or a non-secretor as the vaccine isn't settling into your gut, BUT if it did work that way it wouldn't matter. If you were so immune that the vaccine couldn't settle into your gut then you would be immune to the actual virus anyways.

I'm optimistic about this vaccine!