Australian Slang. Isobois is the opposite of spreadybois and is the term for someone who has covid19 but remained in isolation throughout their infections period. They are not a risk to the population at large because they were isolated at home and not out and about infecting others.
Isobois are good bois.
Victoria has 12 cases today. I know but they were all isobois so that was ok. Not like all the spreadybois in NSW.