I nose what they mean! Ah hem. (Not true, in fact.) "Mucosal vaccines" might win over additional groups, hesitant to accept a needle. > "..they can also activ

I nose what they mean! Ah hem. (Not true, in fact.) "Mucosal vaccines" might win over additional groups, hesitant to accept a needle. > "..they can also activate immune cells in the mucosal tissue of the nose and respiratory tract." This seems smart.