Fecal samples from vlbwi and preterm infants with a birth weight greater than 1500g Raw sequence reads

After birth, newborn intestinal bacteria begin to colonize, and they are closely related to defense against pathogens, immune training, nutrient absorption and disease such as LOS, NEC, allergic diseases, metabolic diseases, and autism spectrum and cognitive disorders.The objective data of intestinal bacteria characteristics within 2 months after birth of VLBWI were supplemented, and the influence of clinical factors on intestinal bacteria was analyzed, so as to find new ideas for finding intestinal bacteria maker.