Viruses that infect gut cells or gut bacteria can enter babies’ bodies with their food
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Having older siblings can influence the mix of viruses in babies’ guts, known as the gut virome.
Although there has been a lot of research on how gut bacteria influence our health, we know much less about the importance of viruses in the gut, which can have both good and bad effects.
At birth, most babies’ intestines are virus-free, but in the first years of life, viruses that infect intestinal cells…