Table 2 Amino acid divergent positions in neuraminidase sequences of N2 influenza isolates found in Uberlândia between 2001 and 2007 compared with sequences of the vaccine strains of 2001–2003, 2004, 2005, 2006 and 2007 seasons

A/Moscow/10/99 ^a

N

M

P

K

V

E

G

K

A

I

T

P

S

P

G

V

Y

110/2001

D

L

* /2002

N

K

L

221/2002

N

R

K

I

T

241/2002

N

K

K

L

C

249.322/2003

G

K

I

T

S

V

320.321/2003

G

N

I

T

N

V

323/2003

V

K

T

T

S

I

A/Fujian/411/2002 ^b

A

T

I

S

330.333/2004

A

I

V

F

341.348/2004

A

T

I

S

339/2004

T

T

I

S

A/Wellington/1/2004 ^c

A

K

I

Y

412/2005

G

E

V

W

A/California/7/2004 ^d

K

452/2006

R

A/Wisconsin/67/2005 ^e

H

V

L

Y

490/2007

R

I

P

H