Replication of avian, human and swine influenza viruses in porcine respiratory explants and association with sialic acid distribution

Table 3 Summary of the influenza viruses used for inoculation of the explants

Influenza virus	Number of passages in embryonated eggs
Swine influenza viruses:
Sw/Belgium/1/98 (H1N1)	3
Sw/Flanders/1/98(H3N2)	3
Sw/Gent/7625/99 (H1N2)	3
Human influenza viruses:
A/New Caledonia/20/99 (H1N1) *	4
A/Panama/2007/99 (H3N2) *	7
Low pathogenic AIVs:
Duck/Italy/1447/05 (H1N1)^§	4
Mallard/Alberta/279/98 (H3N8)^†	3
Duck/Belgium/06936/05 (H4N6) ^‡	3
Chicken/Belgium/150/99 (H5N2)^‡	3
Chicken/Italy/1067/V99 (H7N1) ^§	4
Mallard/Italy/3401/2005 (H5N1) ^§	3

These viruses were kindly provided to us by:
* Alan Hay, National Institute for Medical Research, London, U.K.
† Robert Webster, St. Jude Children's Research Hospital, Memphis, Tennessee, U.S.A.
‡ Thierry van den Berg, Veterinary and Agrochemical Research Centre, Brussels, Belgium
§ Ilaria Capua, Instituto Zooprofillatico delle Venezie, Legnaro, Padova, Italy