HA gene analysis1 cw2 42/2019 - 5/2020
Total
6B.1A5A
6B.1A5A Cluster 1
6B.1A5A Cluster 2
6B.1A5A Cluster 3
6B.1A5A Cluster 4
6B.1A5A Cluster 5
6B.1A7
HA13 N129D, T185I +D187A, Q189E +R205K +N156K, A195E +K130N, N156K, L161I, V250A, partly K209M K302T
HA23 +E179D +V193A I77M, N169S, E179D
All viruses (%) 100 1 51 3 7 20 15 3
All viruses (n) 71 1 36 2 5 14 11 2
Viruses with HI-titer ≤4-fold (n) 51 1 35 2 0 0 11 2
Viruses with HI-titer >4-fold (n) 18 0 14 0 5 12 0 0
No HI-titer (n) 2 0 0 0 0 2 0 0