The continuing debate over increasing consumption of raw (unpasteurised) milk: is it safe?

The debate on the consumption of raw (unpasteurised) milk continues. On one side there is the risk of illness associated with pathogenic bacteria that may be in the milk, a risk that can be mitigated by pasteurisation of the milk prior to consumption. On the other side, there are those who believe that pasteurisation of milk damages its nutrient qualities, and that hygienically produced milk will not contain pathogens. But who is right? The discussion is illustrated by a case study on the contamination of raw bulk tank milk by Listeria monocytogenes.