0? 2? 0? 2? 0? Phlegm can spread many diseases, such as SARS, tuberculosis, influenza, measles and so on. Spitting everywhere not only pollutes the living environment, but also harms the health of others. ? 0? 2? 0? 2? 0? 2? 0? Phlegm is the garbage of respiratory tract, and among all human secretions, phlegm spreads the most diseases. There have been investigations, and there are tens of thousands of germs in one mouthful of sputum. Sputum on the ground, bacteria are not dead. All kinds of germs have certain adaptability to the external environment, and generally can survive for several hours, and some even months. Bacteria live longer in dark and humid places. For example, Mycobacterium tuberculosis in air droplets can survive indoors for months or even years at suitable temperature and humidity. These bacteria can spread in many ways. Healthy people may get sick after inhaling air polluted by bacteria, and their body resistance decreases. ? 0? 2? 0? 2? 0? 2? 0? 2? 0? 2? 0? 2? 0? 2? 0? 2? 0? Many people still have some misunderstandings about spitting. They think that people should not spit in public places, but there is no harm in spitting behind others or in places where there are few people. In fact, the pathogenic bacteria in sputum are mainly spread through the air, and one mouthful of sputum can infect people hundreds of meters away. In addition, if children with weak consciousness spit sputum on the ground, they will be easily infected if they accidentally touch it with their hands or toys while playing. Flies and cockroaches climb over phlegm and then climb onto food. People get sick after eating contaminated food. ? 0? 2? 0? 2? 0? Some people wipe their feet after spitting. On the surface, the sputum disappeared, which actually accelerated the drying of sputum, made the bacteria in sputum fly faster with the wind, and the germs on the soles of the feet were taken away, polluting the environment. Others spit in a dark corner, thinking that they are not dirty if they can't see. In fact, those places that can't see the sun are more suitable for the growth and reproduction of bacteria, which will produce more germs. ? 0? 2 ? 0? 2? 0? Don't spit, and don't swallow it yourself. Although it won't harm anyone if you swallow it yourself, it will harm yourself. Tuberculosis patients often swallow sputum containing mycobacterium tuberculosis, which is easy to suffer from digestive tract tuberculosis; Experts remind that spitting should be put in a spittoon. If you can't find the spittoon for a while, you can spit on the paper, wrap it up and throw it into the trash can. If there is no paper, you can spit on your handkerchief and take it home to wipe it clean. People with chronic cough and expectoration should also be treated in time. ? 0? 2? 0? 2? 0? In short, in order to make our living environment cleaner and healthier, we must pay attention to hygiene and form a good habit of not spitting, starting from me and starting now.