# Probability of knowing someone infected with coronavirus

#### jfahenriques

##### New member
Hi,

I was trying to calculate the probability of a person in a given country knowing someone infected with coronavirus.
Let's say that:
country population = pop
number of infected people in the country = inf
person's acquaintances= acq

My initial idea was to use a binomial approach, considering that probability of "success"=inf/pop

and then calculating the probability of X>=1, with the number of trials being the number of acquaintances (acq)

Would this be a proper approach?

#### Romsek

##### Full Member
These can just be multiplied by the probability an acquaintance is infected i.e. $$\displaystyle \dfrac{\text{# infected}}{\text{population}}$$