Table 1.

Description of parameters in the model (1).

Parameter	Description	Value	References
${\eta }_{\text{C}}$	SARS-CoV-2 disease-induced death rate	0.015/day	[18]
${\eta }_{\text{Z}}$	Zika disease-induced death rate, respectively	0.001	[19]
${\zeta }_{\text{C}}$	SARS-CoV-2 recovery rate	$\frac{1}{15}$/day	[20], [21]
${\zeta }_{\text{Z}}$	Zika recovery rates	$0.09-0.15$	[22]
${\eta }_{\text{CZ}}$	Co-infected disease-induced death rate	0.015/day	Assumed
${\zeta }_{\text{C}}$	Co-infected recovery rate	$\frac{1}{15}$/day	Assumed
${\Lambda }_h$	Human recruitment rate	$\frac{4,108,508}{74.9\times 365}$ per day	[23]
${\Lambda }_v$	Vector recruitment rate	20,000 per day	[19]
${\beta }_1$	Contact rate for SARS-CoV-2 infection	0.5944	[24]
${\beta }_2$	Contact rate for zika infection (human to human)	0.0100	[22]
${\beta }_2^h$	Contact rate for zika infection (vector to human)	0.43	[22]
${\beta }_2^v$	Contact rate for zika infection (human to vector)	$0.60-0.75$	[22]
${\beta }_3$	Co-infection contact rate (human to human)	0.200	Assumed
${\mu }_h$	Human natural death rate	$\frac{1}{74.9\times 365}$ per day	[25]
${\mu }_v$	Vector removal rate	$\frac{1}{21}$ per day	[19]
${\alpha }_1,{\alpha }_2$	Modification parameters	1.0	Assumed