Highly Pathogenic Reassortant Avian Influenza A(H5N1) Virus Clade 2.3.2.1a in Poultry, Bhutan
Atanaska Marinova-Petkova
12, John Franks
1, Sangay Tenzin, Narapati Dahal, Kinzang Dukpa, Jambay Dorjee, Mohammed M. Feeroz, Jerold E. Rehg, Subrata Barman, Scott Krauss, Pamela McKenzie, Richard Webby, and Robert G. Webster
Author affiliations: St. Jude Children’s Research Hospital, Memphis, Tennessee, USA (A. Marinova-Petkova, J. Franks, J.E. Rehg, S. Barman, S. Krauss, P. McKenzie, R.J. Webby, R.G. Webster); National Centre for Animal Health, Ministry of Agriculture and Forests, Thimphu, Bhutan (S. Tenzin, N. Dahal, K. Dukpa, J. Dorjee); Jahangirnagar University, Dhaka, Bangladesh (M.M. Feeroz)
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Figure 2
Figure 2. Pathogenesis of influenza virus rH5N1 and pH5N1 2.3.2.1a genotypes in vitro and in vivo. A) Replication kinetics of rH5N1 and pH5N1 in Madin-Darby canine kidney (mammalian) cells. B) Replication kinetics of rH5N1 and pH5N1 in chicken embryonic fibroblast (avian) cells. C) Oropharyngeal shedding and transmissibility of rH5N1 and pH5N1 in a single-virus transmission model in 5-week-old White Leghorn chickens. D) Cloacal shedding and transmissibility of rH5N1 and pH5N1 in a single-virus transmission model in 5-week-old White Leghorn chickens. Naive chickens were co-housed with donors infected with either Ck/22478 (pH5N1) or Ck/Bh/346 (rH5N1) (C and D). The dashed line in each panel represents the limit of virus detection. ANOVA, analysis of variance; Ck/22478, A/chicken/Bangladesh/22478; Ck/Bh/346, A/chicken/Bhutan/346/2012; Dk/BD/23126, A/duck/Bangladesh/23126; Dk/BD/19097/2013, A/duck/Bangladesh/19097; EID, egg infectious dose; dpi, days postinoculation; hpi, hours postinfection; pH5N1, pandemic H1N1; rH5N1, reassortant H5N1.
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