Table 2.

Best fit parameters obtained from fits of Eq. 2 to total number of cases data of several countries. In all fits $n_o\ge 100$. Error of fit for $n_{\infty }$, $\tau$ and $\alpha$ are, respectively ± 10⁴ cases, ± 0.1 days, and ± 0.01

Country	$n_{\infty }\times {10}^5$ (number)	$\tau$ (days)	$\alpha$	$t_{\text{Max}}$b (days)
China	0.83	1.7	0.45	16
South Korea	0.10	0.6	0.16	8
Iran	1.02	1.5	0.17	32
Turkey	1.49	2.7	0.46	27
Italy	2.40	0.9	0.08	37
Spain	2.80	1.8	0.25	33
France	1.91	1.8	0.21	36
USA	18.0	1.4	0.14	44
Russia	5.16	2.4	0.20	53
Germany	1.90	1.5	0.20	30
UK	2.80	1.9	0.18	43
Brazil	14.9	1.0a	0.04	88

^aFixed parameter in the fit

^bCounts from the start of the epidemic in each state, and not from 22-01-2020