Table A2. Fitted parameters values before and after lock down for Australia, Brazil, Italy, South Africa, United Kingdom, and United States.

The constant parameters used for the model fitting are $q=0.6$, $\sigma =0.6$, ${\eta }_Q=0.135$, ${\eta }_A=0.4352$, ${\gamma }_A=0.13978$, ${\gamma }_I=1/10$, ${\gamma }_Q=1/10$, ${\gamma }_H=1/19$. The parameters ${\beta }_0={0.5713}^{\ast },{0.4656}^{\ast \ast }$ was used for Brazil, and South Africa in Fig. 10.

Parameters	Australia	Brazil	Italy	S. Africa	UK	US
${\beta }_0$	0.5682	${0.4713}^{\ast }$	$0.7027$	${0.7360}^{\ast \ast }$	0.7738	0.7430
${\eta }_{H0}$	0.3725	0.5869	0.5948	0.3660	0.2131	0.4785
${\nu }_{Q0}$	0.3522	0.4363	0.5831	0.2771	0.4638	0.4700
${\nu }_{H0}$	0.3101	0.2649	0.3455	0.1781	0.1282	0.2799
${\omega }_{Q0}$	0.4467	0.4751	0.3548	0.0568	0.5679	0.2520
${\omega }_{H0}$	0.4980	0.2380	0.5237	0.0618	0.5180	0.1301
${\delta }_A$	0.00039	0.00056	0.00081	0.00056	0.00054	0.00045
${\delta }_I$	0.0006	0.00093	0.00135	0.00093	0.0009	0.00075
${\delta }_Q$	0.00065	0.00093	0.00135	0.00093	0.0009	0.00075
${\delta }_H$	0.0013	0.00185	0.0027	0.00185	0.0018	0.0015
${\beta }_1$	0.1916	0.6534	0.3017	0.4061	0.3490	0.2319
${\eta }_{H1}$	0.1206;	0.2348	0.2461	0.5475	0.2988	0.8418
${\nu }_{Q1}$	0.1345	0.2347	0.1258	0.1100	0.2178	0.1305
${\nu }_{H1}$	0.3011	0.2202	0.3155	0.1576	0.1252	0.1110
${\omega }_{Q1}$	0.6941	0.4820	0.6792	0.2411	0.5776	0.5350
${\omega }_{H1}$	0.5242	0.5979	0.5372	0.1098	0.5281	0.1610
${\mathcal{R}}_0^0$	2.4211	2.1292	3.5972	3.7801	2.946	3.6126
${\mathcal{R}}_1^0$	0.5930	0.8806	0.6450	1.5173	0.6843	0.8477