Antibody in Tears, Saliva and Nasal Secretions Following Oral Immunization of Humans with Inactivated Influenza Virus Vaccine

Abstract

Oral immunization of 5 volunteers with an enteric-coated inactivated influenza vaccine resulted in a significant rise of IgA-specific antibodies in tears, saliva and nasal secretion, reaching a maximum response 5-7 weeks after completion of immunization.