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Table 3 Antigenic cross-reactivity between the novel H1 av N2 reassortant strains and reference strains representative of the European enzootic swIAV lineages

From: Virus persistence in pig herds led to successive reassortment events between swine and human influenza A viruses, resulting in the emergence of a novel triple-reassortant swine influenza virus

Virus strain Haemagglutination inhibition titer with hyperimmune sera against:
H1avN1 A/Sw/Cotes d’Armor/0388/09 H1huN2 A/Sw/Scotland/410440/94 H3N2 A/Sw/Flanders/1/98 H1N1pdm A/Sw/Sarthe/0255/10
A/Sw/Cotes d’Armor/0388/09 (H1avN1) 1280 < 10 < 10 < 10
A/Sw/Scotland/410440/94 (H1huN2) < 10 1280 10 < 10
A/Sw/Flanders/1/98 (H3N2) < 10 < 10 2560 < 10
A/Sw/Sarthe/0255/10 (H1N1pdm) 40 < 10 < 10 640
A/Sw/France/37-120345/12 (H1avN2) 320 < 10 < 10 20
A/Sw/France/61-140350/14 (H1avN2) 640 < 10 < 10 40
A/Sw/France/37-160178/16 (H1avN2) 160 < 10 < 10 < 10