We developed a chicken mucosa-targeting polymeric nanoparticle vaccine (~90 nm) co-delivering viral antigenCpG adjuvant using a water-in-oil-in-water double emulsion technique. The particles are biodegradablebiocompatible. This nanoparticle significantly stimulated chicken Harderian gland B cell proliferationsubsequent local IgAIgG secretion in tears. The mucosal Ig protected chickens from virus infection by lowering virus replication at the infection sitethereafter reducing tracheal epithelial ciliostasissystemic infection, relieving clinical symptoms.

Provided is an influenza mucosal vaccine compositionpreparationapplication thereof. This composition contains an antigen fusion protein which includes an influenza virus antigena Type IIb heat-labile enterotoxin A subunit. Immunization with the antigen fusion protein induces cellularhumoral immune responses, including systemicmucosal immune responses, against a specific in

We developed a recombinant adenovirus Ad-HFMD vaccine which can express virus-like particles (VLPs) of EV71 capsid proteins. Mouse studies showed that Ad-HFMD can induce the protective antibodycellular immunity against EV71CVA16 in hSCARB2 transgenic (hSCARB2-Tg) mouse challenge model.

In this project, we have reorganized several highly immunogenic sitesstructurally essential regions to maintain it in a pre-fusion stateuse it as main antigen in our RSV vaccine candidate (RSV-F005). To induce a mucosal immune response, intranasal administration route was chosen. New mucosal adjuvant (H-muad) has been tested in threee animal models.