Re: No use
A person walking through Oxford Street station to change from one tube line to another during the rush hour will typically be inside the infectious range (under 1 metre) of lots of people (possibly over 100). If the person is a non-symptomatic carrier then by the time that the first detected case appears the total of possible first and second stage contacts will total several thousands - too many to be of any use.
Biting the hand that feeds IT
