Germ Theory of DiseasePasteurizationHistory, 19th CenturySterilizationMilkFood HandlingFood PreservationFood MicrobiologySteamHot TemperatureFood IrradiationFood-Processing IndustryConsumer Product SafetyDisinfectionFood ContaminationMycobacterium avium subsp. paratuberculosisMilk, HumanIce CreamColony Count, MicrobialCattleCheeseDairyingDrug DiscoveryAbattoirsListeria monocytogenesNeoplasms, Germ Cell and EmbryonalCattle DiseasesEscherichia coli O157SalmonellaPsychological TheorySpores, Bacterial