Introduction: The 501Y Variant 2 contains 17 mutations, including H69-V70 deletion (Delta69/Delta70), Y144 deletion (Delta144),
N501Y,
A570D,
P681H,
T716I,
S982A,
D1118H,
T1001I,
A1708D,
I2230T, S3675-G3676-F3677 deletion,
Q27stop,
R52I,
Y73C,
D3L, and
S325F.