Germ Theory of DiseasePasteurizationHistory, 19th CenturySterilizationMilkFood HandlingFood PreservationFood MicrobiologySteamHot TemperatureFood IrradiationFood-Processing IndustryConsumer Product SafetyDisinfectionFood ContaminationMycobacterium avium subsp. paratuberculosisMilk, HumanIce CreamColony Count, MicrobialCattleCheeseDairyingAbattoirsListeria monocytogenesNeoplasms, Germ Cell and EmbryonalCattle DiseasesEscherichia coli O157Psychological TheorySalmonellaSpores, Bacterial