Fig. 2From: Virulence of three European highly pathogenic H7N1 and H7N7 avian influenza viruses in Pekin and Muscovy ducksVirus excretion in oropharyngeal and cloacal swabs after intrachoanal inoculation of Muscovy ducks with HPAIV H7 viruses. Virus excretion in oropharyngeal and cloacal swabs at 2 (a-b), 4 (c-d) and 7 (e-f) days post inoculation using RT-qPCR expressed by equivalent Log10 PFU/mL. All results are expressed as average and standard deviation (mean ± SD) per group at indicated time points post infection. The viruses were not detected in swabs collected at 10 dpi (data not shown). Statistical significance shown in asterisks indicate P values < 0.05Back to article page