NPM1 and influenza: Using the pig influenza pre-exposure model we demonstrated that immune responses to the same viral vectored vaccines (chimpanzee adenovirus and attenuated modified vaccinia Ankara virus vaccines expressing nucleoprotein, matrix protein and neuraminidase, ChAdOx-NPM1-NA2 and MVA-NPM1-NA2) administered by different routes resulted in different immune responses in the blood and respiratory tract (14, 15).