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Table 6 Neuraminidase inhibition assay for A(H1N1)pdm09 viruses isolated in immunocompromised patients

From: Characterization of neuraminidase inhibitor-resistant influenza virus isolates from immunocompromised patients in the Republic of Korea

Virus Type (Subtype) Genotype NAI resistance (IC50 fold change)
Oseltamivir Zanamivir Peramivir
A/Korea/S0003/2019 A(H1N1)pdm09 Variant (H275Y) HRI
179.33
NI
2.56
HRI
117.74
A/Korea/S0002/2019 Variant (H275Y) HRI
221.58
NI
0.44
HRI
168.48
2018–2019 isolates A(H1N1)pdm09 Wild 0.1–1.2 0.3–0.7 0.1
A(H3N2) Wild 0.1–0.2 0.4–0.8 0.2–0.3
B Wild 9–16 0.7–1.6 0.3–0.4
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