Table 1.

Contact type and transmission probability for social network based and random encounters.

Type of contact	Frequency of encounters	No. of contacts per encounter	Transmission probability ($\beta$) per contact
Household	Daily	All household members	${\beta }_c$
School	5 days per week	50% of the class	${\beta }_k={\beta }_c\times 0.5$
Friendship/Acquaintance	Daily (age < 65 years); 3.5 days per week (age > 65 years)	1–10% of their friends	${\beta }_c$
Relations	2 days per week	One relative per household	${\beta }_c$
Workplace	5 days per week	All close colleagues and one from other colleagues	${\beta }_c$
Workplace (public facing)	5 days per week	Random contacts are drawn from a Poisson distribution $Pois({\lambda }_W)$ ${\lambda }_W=3$p$\times zon{e}_{-}population$	${\beta }_r={\beta }_c\times 0.1$
Random	Daily (age $<65$ years); 3.5 days per week (age > 65 years)	Random contacts are drawn from a Poisson distribution $Pois({\lambda }_R)$ ${\lambda }_R=$p$\times zon{e}_{-}population$	${\beta }_r={\beta }_c\times 0.1$