It can be seen that the epidemic has gradually improved, with the number of new cases further reduced and more patients cured. However, there are still many people who are worried about whether the new coronavirus will have serious sequelae like the SARS back then. First of all, let’s start with the conclusion that there are almost no sequelae for patients with mild illnesses, and a few patients with severe illnesses will have sequelae, such as pulmonary fibrosis and hormone-induced bone damage (less), but compared to the situation in the year of SARS, it is much better. 1.After-effects brought by SARS There are two kinds of after-effects of curing patients during SARS, one is thought to be pulmonary fibrosis caused by virus-induced lung tissue damage, and the other is because of the massive use of glucocorticoid hormones and the resulting bone damage, the most typical is femoral head necrosis. 2, the sequelae of the causes (1) pulmonary fibrosis First of all, pulmonary fibrosis, in simple terms, can be understood as a scar in the lungs, when our lung tissue is damaged by viral attack, the human body will start the self-repair mechanism, the damage will be replaced by newborn “scars” repair, but because the normal lungs are composed of alveoli, have good elasticity, and can be used to repair the lungs. However, because the normal lungs are made up of alveoli, which have good elasticity and good gas exchange with the capillaries, the normal alveoli will be replaced by “scars”, and its elasticity will be decreased, and the gas exchange will be blocked, so that it can meet the normal functional needs. (2) Necrosis of the femoral head For necrosis of the femoral head, because at that time, people did not have such a deep understanding of coronavirus pneumonia as we do nowadays, and there were not so many drugs to use, and glucocorticosteroids, despite the side effect of damaging the bone, but its powerful anti-inflammatory effect, at that time, it was the optimal solution to fight against SARS, and the lesser of the two evils was the damage of bone, which could be put in the second place in comparison with the threat to life. can be put on the back burner. 3. Can new coronavirus pneumonia also produce such serious sequelae? Novel coronavirus pneumonia can also have sequelae of pulmonary fibrosis and bone damage, but they are not as serious as those of SARS. First of all, for patients with mild disease, there will be almost no effect, for patients with severe disease, pulmonary fibrosis will have a certain effect, but the lungs have a certain functional reserve and the ability to repair and compensate, after the later stage of rehabilitation training and treatment, can still continue to live a normal life, only a small portion of the patients with a large area of damage will have an impact on their activities. And due to the experience accumulated by SARS and the development of medicine, in the treatment of new coronavirus pneumonia patients to minimize the use of hormones, according to the seventh edition of the diagnostic and treatment program, only in the oxygenation index progressive deterioration, rapid progress of imaging, the body inflammatory response of over-activation of the state of the patient is appropriate for the use of, so the vast majority of patients do not have to worry about hormones brought about by the side effects of bone damage.