Table 1. Number of COVID-19 infections by October 18, 2021, classified by variants and countries.

Country	Alpha Variant	Beta Variant	Gamma Variant	Delta Variant
Italy	25,979 [23]	128 [24]	2,585 [25]	22,588 [26]
India	4,184 [23]	240 [24]	5 [25]	36,509 [26]
SriLanka	430 [23]	6 [24]	unknown	730 [26]
Turkey	1,916 [23]	502 [24]	169 [25]	45,200 [26]
USA	232,486 [23]	2,998 [24]	27,870 [25]	588,640 [26]