Delta refers to the Delta New Coronavirus. Although the ability to spread is significantly stronger than before the mutation, the speed of transmission has increased, and the incubation period has shortened, it does not change the nature of the disease. If early detection, early diagnosis, and early treatment can be achieved, patients infected with the Delta New Coronavirus can also be effectively treated, and the majority of patients can still be cured. If patients are not diagnosed in time and are diagnosed only after the disease has gradually worsened, it can easily develop into severe pneumonia. Patients with severe underlying diseases are also prone to acute exacerbations of chronic diseases, making the condition more complicated, more difficult to treat, and possibly life-threatening. Therefore, patients with suspected symptoms such as fever, cough and malaise, especially those with a recent history of travel to high-risk areas or those with a history of exposure to confirmed patients with New Coronary Pneumonia, need to be seen promptly at the fever clinic. If the infection with Delta New Coronavirus is confirmed, it is important to go to a designated hospital for isolation and treatment, and you can take antiviral drugs such as ribavirin as prescribed by your doctor. For fever symptoms, physical cooling, such as using cold compresses, is needed first. For patients with high fever that does not subside, antipyretic and analgesic medications such as Lianhua Qingfei capsule and acetaminophen can be used as prescribed by the doctor. For patients with cough and sputum, measures such as nebulization and suction can be used to promote sputum excretion; for those with respiratory failure, ventilator-assisted breathing may be required. Studies have shown that the rate of severe illness and mortality can be reduced even after infection with Delta variant virus after vaccination with New Crown vaccine, so active vaccination with New Crown vaccine is recommended. Pay attention to personal protection in general, wear a mask when going out, and maintain a social distance of 1-2 meters.