Table 9.

Fitting results of the exponential and the Gamma models for the outbreak of COVID-19 in eleven selected countries between January 11 to May 31, 2020.

Country	Exponential			Gamma
	$\mu$	$\beta$	$R^2$	$\mu$	$\alpha$	$\beta$	$R^2$	Peak
China	7.91	−0.032	0.368	−9.6	7.77	−0.290	0.813	02/07
USA	7.23	0.025	0.582	−64.7	20.56	−0.195	0.939	04/26
Canada	4.19	0.026	0.561	−75.1	22.61	−0.215	0.920	04/26
Russia	3.67	0.044	0.840	−135.2	37.90	−0.308	0.993	05/13
Spain	6.59	0.013	0.164	−77.0	24.72	−0.283	0.899	04/08
UK	5.53	0.023	0.446	−82.9	25.25	−0.248	0.857	04/22
Italy	6.66	0.010	0.110	−58.0	19.53	−0.238	0.945	04/03
France	6.26	0.012	0.096	−96.9	30.47	−0.353	0.694	04/07
Germany	6.33	0.011	0.103	−83.7	26.80	−0.317	0.862	04/05
Switzerland	4.90	0.006	0.030	−116.0	36.50	−0.463	0.853	03/30
Sweden	3.28	0.026	0.626	−43.75	13.6	−0.123	0.876	04/30