Efficacy of a Recombinant Turkey Herpesvirus AI (H5) Vaccine in Preventing Transmission of Heterologous Highly Pathogenic H5N8 Clade 2.3.4.4b Challenge Virus in Commercial Broilers and Layer Pullets

Figure 7

Presence of humoral immune response to challenge in vaccinated chickens was checked with commercial ELISA measuring antibodies against the NP protein. Positive results with ID Screen® Influenza A Nucleoprotein Indirect ELISA kit are above 668 titer (positivity limit is shown with dotted line).