United states, economic conditionsEconomic historyAnimal DiseasesAnimal healthAnimalsAnimals, diseasesCommunicable diseases in animalsDiseasesEconomic conditionsFoodHealth PolicyHistoryHistory, 19th CenturyHistory, 20th CenturyInfectious Disease TransmissionLivestockLivestock, diseasesPreventionPrevention & controlSafety measuresUnited StatesUnited States Bureau of Animal IndustryUnited States. Bureau of Animal IndustryUnited states, bureau of animal industryWirtschaftsentwicklung