Real-time reverse transcription-PCR assays were developed to differentiate pandemic H1N1 2009 from other genetic lineages of the H1 subtype and other subtypes of influenza viruses circulating in human and pig populations.
(Research Team for Zoonotic Diseases)
References:
Hiromoto Y. et al. (2010) J. Virol. Methods. 170 (1-2): 169-172