A/Victoria/2570/2019 (H1N1)pdm09-lignende stamme (A/Victoria/2570/2019, IVR-215)
B/Phuket/3073/2013-lignende stamme (B/Phuket/3073/2013, vild type)
B/Washington/02/2019 - lignende stamme (B/Washington/02/2019, wild type)(inaktiveret)
A/Cambodia/e0826360/2020 (H3N2)-lignende stamme (A/Cambodia/e0826360/2020, IVR-224)
A/Darwin/9/2021 (H3N2) - lignende stamme (A/Darwin/9/2021, IVR-228)
B/Austria/1359417/2021 - lignende stamme (B/Michigan/01/2021, vildtype)
A/Victoria/4897/2022 (H1N1)pdm09 - lignende stamme (A/Victoria/4897/2022 IVR-238) (inaktiveret)