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Tao Zuo (The Chinese University of Hong Kong) and collegues published a new paper in Cell Host & Microbe on the fecal DNA virome of 930 healthy adults from two regions in China spanning six ethnicities, including urban and rural residents. They found that geography had the strongest impact on gut virome variation, that ethnicity-distinct diets associated with viral species composition, that urbanization enhanced virome differences between individuals, and that the virome was more heterogeneous than the bacterial microbiome.