Chen et al., 1998
?
A/Seal/Mass/80
(H7N7)
Webster et al, 1981
SC35M
Scheiblauer, Orlich and Rott,
1995
R
R
G
R
G
F
L
T
R
R
G
R
R
F
L
T
R
G
F
L
T
History of SC35 and SC35M
(H7N7)
SC32
SC35
CEC
CEC
Li et al., 1990