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Italy recorded their first CV death on 2/21, while the US was 2/29. Exponential math follows an initial series pattern regardless of population size. (Population limits comes into play later when saturation levels begin to be reached due to the "doubling effect".)

So, if you line up the respective initial date lines, then run the series for actual daily counts, you can compare & contrast the different growth curves. Of note is how both the US & Italy tracked pretty closely for the first 11 days, but then we see Italy take off (ratio).

Italy vs US (net NY)


		Italy	60.5		IT v US		USA-NY	310.9	
Day	Date	Cum Total	% Chg	Daily	Ratio	Date	Cum Total	% Chg	Daily
									
1	2/21/2020	1		1	1.0	2/29/2020	1		1
2	2/22/2020	2	100.0%	1	1.0	3/1/2020	2	100.0%	1
3	2/23/2020	3	50.0%	1	0.5	3/2/2020	6	200.0%	4
4	2/24/2020	7	133.3%	4	0.8	3/3/2020	9	50.0%	3
5	2/25/2020	10	42.9%	3	0.8	3/4/2020	12	33.3%	3
6	2/26/2020	12	20.0%	2	0.9	3/5/2020	14	16.7%	2
7	2/27/2020	17	41.7%	5	0.9	3/6/2020	18	28.6%	4
8	2/28/2020	21	23.5%	4	1.1	3/7/2020	19	5.6%	1
9	2/29/2020	29	38.1%	8	1.3	3/8/2020	22	15.8%	3
10	3/1/2020	34	17.2%	5	1.3	3/9/2020	26	18.2%	4
11	3/2/2020	52	52.9%	18	1.7	3/10/2020	31	19.2%	5
12	3/3/2020	79	51.9%	27	2.1	3/11/2020	38	22.6%	7
13	3/4/2020	107	35.4%	28	2.5	3/12/2020	42	10.5%	4
14	3/5/2020	148	38.3%	41	3.0	3/13/2020	49	16.7%	7
15	3/6/2020	197	33.1%	49	3.6	3/14/2020	54	10.2%	5
16	3/7/2020	233	18.3%	36	3.9	3/15/2020	59	9.3%	5
17	3/8/2020	366	57.1%	133	5.4	3/16/2020	68	15.3%	9
18	3/9/2020	463	26.5%	97	5.5	3/17/2020	84	23.5%	16
19	3/10/2020	631	36.3%	168	6.0	3/18/2020	106	26.2%	22
20	3/11/2020	827	31.1%	196	6.1	3/19/2020	136	28.3%	30
21	3/12/2020	1,027	24.2%	200	5.6	3/20/2020	183	34.6%	47
22	3/13/2020	1,266	23.3%	239	5.3	3/21/2020	238	30.1%	55
23	3/14/2020	1,441	13.8%	175	4.4	3/22/2020	329	38.2%	91
24	3/15/2020	1,809	25.5%	368	5.0	3/23/2020	359	9.1%	30
25	3/16/2020	2,158	19.3%	349	5.4	3/24/2020	399	11.1%	40
26	3/17/2020	2,503	16.0%	345	3.9	3/25/2020	644	61.4%	245