So far it's been found only in nostrils, but similar species feed in other mucous membranes, like those in the eyes and the rectum. (discovermagazine.com)
People with APECED also often suffer from chronic fungal infections in their mouths and other mucous membranes, and hair loss. (sciencemag.org)
If a vaccine is to protect the intestines and other mucous membranes in the body, it also needs to be given through the mucosa, for example as a nasal spray or a liquid that is drunk. (sciencedaily.com)