To this end , suitable formulations and an effective mass vaccination method <*> needs to be developed .
that inhalation of a non - adjuvanted dry powder influenza vaccine formulation during normal breathing results in partial protection against lethal influenza challenge .
To this end , suitable formulations and an effective mass vaccination method that can be translated to field settings needs to be developed .
Our previous study in chickens has shown that inhalation of a non - adjuvanted dry powder influenza vaccine formulation during normal breathing results in partial protection against lethal influenza challenge .