1. Symptoms of diarrhea in infants in autumn Autumn is the season when diarrhea is most common, and infants are more susceptible to infection because their immunity has not yet fully developed. Therefore, parents need to understand the symptoms of infant diarrhea in autumn, including diarrhea, vomiting, fever, anorexia, etc. 2. In addition to bacterial and viral infections, there are other reasons that may also cause autumn diarrhea in infants. : Improper diet, overfeeding, use of expired milk powder, etc.