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Influenza Vaccines

Modified surfactant stimulates IgA in response to influenza antigen

Published in Vaccine Weekly, March 1st, 2006

Modified pulmonary surfactant is a potent adjuvant that stimulates the mucosal IgA production in response to the influenza virus antigen.

According to recent research from Japan, "The intranasal administration of influenza hemagglutinin (HA) vaccine with Surfacten, a modified pulmonary surfactant free of antigenic c-type lectins, as a mucosal adjuvant induced the highest protective mucosal immunity in the airway. The intranasal immunization of mice with HA vaccine (0.2 mcg)-Surfacten (0.2 mcg) selectively induced the neutralizing anti-HA IgA, but not IgG, and conferred nearly maximal protection in the airway, without inducing a systemic response."

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