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Table 1.

Percentage identity of contemporary swine HA1 consensus to clade candidate vaccine virus or human seasonal vaccine strain

Contemporary swine consensusa
CVV or vaccine 1A.1.1 1A.3.3.3 1A.3.3.2 Misc. 1A 1B.2.1 1B.2.2.1 1B.2.2.2 Brazil 1B.2.2 Brazil 1B.2 Misc. 1B.1 1C.2.1 1C.2.2 1C.2.3 H3.90.4a H3.90.4b Misc. H3.90s H3.90.1 H3.10.1 H3.10.2 Epitope changes
1A.1.1 A/Ohio/24/2017 97% Sa, Sb
1A.3.3.3 A/Ohio/09/2015 92% Sa, Sb, Ca1, Ca2
Hu-Vac (1A.3.3.2) A/Brisbane/02/2018 98% Sa
Hu-Vac (1A.3.3.2) A/Brisbane/02/2018 86%–88% Sa, Sb, Ca1, Ca2, Cb, RBS
1B.2.1 A/Michigan/383/2018 99% None
1B.2.2.1 A/Iowa/32/2016 99% Ca2
1B.2.2.1 A/Iowa/32/2016 91% Ca2, Sb, RBS
1B.2.2.1 A/Iowa/32/2016 94% Ca2, Sb, RBS
Other-hu-1B A/New Caledonia/20/1999 95% Cb, Sa, Sb, RBS
Other-hu-1B A/Brazil/11/1978 93% Cb, Sa, Sb, Ca2, RBS
1C.2.1 A/Netherlands/3315/2016 95% Sa, Ca2, Cb, RBS
1C.2.1 A/Netherlands/3315/2016 92% Sa, Sb, Ca2, Cb, RBS
1C.2.3 A/Hunan/42443/205 99% None
H3.1990.4a A/Indiana/10/2011 98% D
H3.1990.4a A/Indiana/10/2011 93% A, B, C, D
Hu-Vac A/Wuhan/359/1995 93% A, B, C
Hu-Vac A/Wuhan/359/1995 95% C, D
H3.2010.1 A/Ohio/28/2016 99% A
H3.2010.1 A/Ohio/13/2017 99% None
Hu-Vac A/Hong Kong/4801/2014 97% A, C

aHA1 swine clade consensus for 2016–2019 globally and March 2019–September 2019 United States.