Veterinary Research

Table 3 Pattern of attachment of avian influenza viruses to the epithelial cells of the intestinal tract

From: Enterotropism of highly pathogenic avian influenza virus H5N8 from the 2016/2017 epidemic in some wild bird species

Species	Tissues	Avian influenza viruses
Species	Tissues	H4N5	2014 H5N8	2016 H5N8	H5N1
Mallard	Duodenum	++	+	++	++
	Jejunum	++	++	++	++
	Ileum	++	+	++	+
	Colon	++	+	++	+
Pochard	Duodenum	nd	±	±	±
	Jejunum	±	±	±	–
	Ileum	–	±	–	–
	Colon	±	±	–	–
Tufted Duck	Duodenum	±	±	±	±
	Jejunum	±	±	±	–
	Ileum	±	±	–	–
	Colon	±	±	–	±
Wigeon	Duodenum	+	±	±	±
	Jejunum	+	+	+	±
	Ileum	+	+	+	±
	Colon	+	+	+	±
Chicken	Duodenum	++	++	++	±
	Jejunum	++	++	++	±
	Ileum	++	++	++	±
	Colon	+	+	+	±

Mean abundance of attachment was scored as follows: attachment to < 1% of epithelial cells (-), attachment to ≥ 1 and < 10% of epithelial cells (±), attachment to ≥ 10% and < 50% of epithelial cells (+), and attachment to ≥ 50% of epithelial cells (++).
nd not detected.

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ISSN: 1297-9716

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