Table 5.

Pre‐treatment IC₅₀ values for each neuraminidase inhibitor used in the 2010–2011 season

IC50 before starting therapy, nm	A(H1N1) pdm09 (a)	A(H3N2) (b)	B (c)	P value between
				(a) and (b)	(b) and (c)	(a) and (c)
Oseltamivir	0·97 ± 0·48 (31)	0·74 ± 0·13 (9)	44·5 ± 13·6 (11)	<0·05	<0·001	<0·001
Zanamivir	0·86 ± 0·32 (31)	1·94 ± 0·43 (9)	12·3 ± 4·0 (11)	<0·001	<0·001	<0·001
Laninamivir	1·77 ± 0·78 (31)	3·9 ± 1·6 (9)	21·3 ± 6·9 (11)	<0·001	<0·001	<0·001

*Duration of fever after the first dose () number of patients.