How does increased levels of ecoli correlate with Listeria?
In: Biology
I am definitely not an expert on this and my GMP experience was not in food prep… but no one has tried to answer so I will give it a shot.
My understanding of it is that the growth of an indicator species shows that conditions were ideal for a ‘concerning’ microbe to grow. This hints at a defect in the manufacturing process, or a crappy job of keeping things clean in the process.
It’s not that E. coli loves to grow with certain contaminating species, but E. coli probably shares some growth characteristics with the species it is an indicator for (eg. temperatures, concentrations of solutes, etc.), so growth of it alludes to the possibility of growth of one of the concerning bugs.
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