A two-month-old infant has persistent bloody stools. How should it be treated and managed?

Patient's question:

The child was born weighing 2770g, with the first feed being formula milk, and full breastfeeding was achieved around day 7. Since birth, the child's stools have consistently contained curds, appearing yellow-green, with rarely any paste-like or golden stools. At around 20 days, the first occurrence of extremely fine blood streaks in the stools was observed, after which they returned to normal. At 50 days, blood was detected again in the stools, and a hospital test was conducted for stool routine, occult blood, rotavirus, and adenovirus. Only the occult blood test showed positive results. The doctor prescribed bifidobacteria and Lysine Adenosine B12 oral liquid, along with an injection of vitamin K1. The mother was advised to avoid oily foods and refrain from consuming milk, eggs, and soy products. At 54 days, another stool test was conducted for stool routine, occult blood, and rotavirus, which showed 1+ white blood cells, 0-2 red blood cells, and a weakly positive occult blood result. At 76 days, a stool test for routine and occult blood showed 0-2 white blood cells, 4-6 red blood cells, and a positive occult blood result. In the three days prior, the mother had consumed sea fish. The child's bowel movements occur approximately 10 times a day, mostly consisting of curds and water separation. Since the stools were collected from diapers each time, the doctor did not provide a specific diagnosis but suspected gastroenteritis.

Doctor's answer:

Continue breastfeeding, but the mother must strictly avoid dairy products and eggs. Although the mother had previously avoided milk, eggs, and beans for over 20 days, consuming products like cakes, crepes, or even beef jerky during that period could still cause the child to have an allergic reaction. Therefore, it cannot be called strict or complete avoidance, which also affects the judgment of the diagnosis and the observation of treatment effects.

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