As China enters the annual peak season for acute infectious diarrhea, the Chinese Center for Disease Control and Prevention (China CDC) has issued a public health advisory emphasizing the need for heightened precautions. The surge in cases, primarily driven by pathogens such as norovirus and rotavirus, poses significant risks, particularly to vulnerable populations like children and the elderly. Norovirus, which remains highly active from October through March, thrives in crowded environments such as schools, childcare centers, elderly care facilities, and hospitals. Symptoms of norovirus infection include nausea, vomiting, fever, abdominal pain, and diarrhea. While most patients recover within two to three days without specialized treatment, infants and elderly individuals with chronic conditions are at greater risk of severe complications. Rotavirus, which peaks around September, predominantly affects young children, causing symptoms such as diarrhea, vomiting, and fever. To mitigate these seasonal threats, health authorities recommend vaccinating children against rotavirus and maintaining rigorous hand hygiene practices. Additionally, nurseries and schools are advised to enforce strict health protocols for kitchen staff and caregivers, including wearing masks, practicing proper hand hygiene, and immediately stepping away from their duties if symptoms arise. These measures aim to curb the spread of these highly contagious viruses and protect public health during this critical period.