Does a single immunization with soluble recombinant trimeric hemagglutinin protect chickens against highly pathogenic avian influenza virus H5N1?
Our results demonstrate that sH5(3) constitutes an attractive vaccine antigen for protection of chickens and mammals against HPAI H5N1. As these recombinant soluble hemagglutinin preparations can be produced with high yields and with relatively short lead time, they enable a rapid response to circulating and potentially pandemic influenza viruses.
Postprandial hyperemia can be efficiently measured by echo-Doppler ultrasonography and the results are comparable to those obtained with the hemodynamic studies.