Stomach acid and digestive enzymes will just deactivate most components. Live vaccines might cause issues (probably wouldn’t want to drink the TB vaccine). The post in discussion shows a shocking fundamental misunderstanding about how all of this works though. It is meant for like-minded people who would accept this logic.
“Oral BCG was used in recent clinical studies and it was found that revaccination orally induces circulating cell-mediated immune responses, but does not induce a positive TST in responsive individuals.”
Stomach acid and digestive enzymes will just deactivate most components. Live vaccines might cause issues (probably wouldn’t want to drink the TB vaccine). The post in discussion shows a shocking fundamental misunderstanding about how all of this works though. It is meant for like-minded people who would accept this logic.
“Oral BCG was used in recent clinical studies and it was found that revaccination orally induces circulating cell-mediated immune responses, but does not induce a positive TST in responsive individuals.”