These challenges were overcome by hemagglutination-based assays. Conclusion The latter allow a robust performance in discriminating NAIs and non-NAIs.

The low hemagglutination titers for H3N2 may have been due to rapid mutation of that strain, which might blunt the immune response, the authors said. Alternatively, the hemagglutination assay may ...

The cultures positive for hemagglutination were subject to a reverse transcription-polymerase chain reaction (RT-PCR) test, specific for M segments. Next-generation sequencing (NGS) was performed ...