"Bacterial counts" refers to the number of bacteria present in a given sample or object. It is a way to measure and quantify the amount of bacteria in order to determine how many are present. Full definition
Still other studies of cash from around the world specifically point to high bacterial counts on money handled by food workers or on hospital grounds. (scientificamerican.com)
None of the batches developed unacceptable bacterial counts or decreased vitamin content compared to a control batch that was only frozen once. (lactationlink.com)
A study done by Pardou et al. (1994) actually found that some of the breastmilk from the study that had been left in the fridge for 8 days, had a lower bacterial count in it than when it was first expressed! (themilkmeg.com)