According to old customs in Beijing, when it comes to "Summer Solstice", people can eat cold noodles to stimulate the appetite and at the same time don't need to worry about having diarrhea.
根据北京地区的旧俗，每到夏至时，人们就会吃凉面刺激食欲，同事也不必担心会腹泻。
2
For treatment of catching cold during summer months, chill and fever, headache with no sweat, stomach ache, vomiting and diarrhea, urination not smooth, edema.
主夏月外感风寒，内伤于湿，恶寒发热，头痛无汗，脘腹疼痛，呕吐腹泻，小便不利，水肿。
3
Conclusion: Infection rate of Aeromonas varied in season, having close relationship with diarrhea in summer and autumn.