Why are there more virus infections in summer?

The hot and humid weather in summer provides good temperature and humidity conditions for virus germs. Viral bacteria are active in growth and reproduction, which easily leads to food infection and deterioration, and people are easily infected with viruses after eating deteriorated food. Furthermore, there are many viruses and germs in the environment, especially in humid places, which can easily lead to skin and respiratory infections. Summer is also a period of high incidence of rain and heat. If the clothes are not cleaned, or it coincides with rainy weather, the clothes are wet and dry, which is easy to breed germs. It is easy to cause skin infection after wearing, especially underwear, shoes and socks, so wash clothes frequently and don't wear wet clothes. Furthermore, 1, due to the hot summer climate, people sweat a lot and consume a lot of physical strength. 2. The days are long in summer, and the sultry weather often affects people's sleep and rest, resulting in insufficient sleep. In summer, due to the hot climate, people's appetite suddenly drops. Due to the hot weather, people are generally lazy to move, which reduces the time for physical exercise. All the above factors will reduce the human body's resistance, and viruses and germs will take advantage of it, which will lead to infection.