[Nevermark]

A feeder early would be so much better than long series of injections, that have been used to build up immunity later in life. For serious sufferers of pollen type allergies.

I don't know if ingesting pollens early would help, but it's a thought! Mixed into honey, perhaps.

[ytpete]

Just in case: worth noting that honey is quite dangerous for infants because of the high risk of botulism, which infant immune systems struggle to fight off.