Spring infectious diseases include influenza, chickenpox, measles, rubella, mumps, and the new coronavirus that is currently pandemic. 1. Influenza is an acute respiratory infection caused by the influenza virus, with typical symptoms of high fever, generalized pain, malaise, and mild respiratory symptoms. 2. Chickenpox mainly infects infants and school-age children, and is characterized by fever and the appearance of red rashes, macules, herpes, and crusts on the skin mucous membranes. 3, 3. Measles is a highly contagious acute rash respiratory infection caused by the measles virus, with a fever of about 38°C for three days before the onset of the rash, followed by white spots on the oral mucosa, also known as Koch’s spots, Rubella is also a common springtime epidemic, an acute respiratory infection caused by the rubella virus, which starts with a low fever and a rash that appears 1-2 days later, and susceptible preschoolers aged 1-5 years old are the main ones.