Identify the pathogen causing the illness
Identifying the pathogen is certainly an important part of investigating any disease outbreak. However, by the time the public health unit begins its investigation at Walkerton, this aspect of the problem has already been addressed....
The paediatrician who has reported the it to the health unit suspects that the illness is caused by a form of E. coli, and has already sent samples to a lab for identification.
So the health unit
