Neocoronavirus generally refers to a new type of coronavirus pneumonia, which can be reinfected after recovery from the disease. Therefore, patients are advised to take precautions to prevent re-infection even after the disease has recovered. After infection with the new coronavirus, the patient’s body will produce protective antibodies, but these antibodies will not last forever. If the protective antibodies disappear some time after the disease is cured, reinfection may occur after exposure to the new coronavirus. Therefore, it is recommended that patients wear a mask when going out and receive the Neocoronavirus vaccine in time to prevent infection after their condition has recovered. If symptoms such as cough, fever, chest tightness, shortness of breath and breathlessness occur after the disease has been cured and the patient is suspected to be re-infected with the New Crown Virus, he/she can go to the hospital for a nucleic acid test, and if the result is positive, the patient is infected with the New Crown Virus. If the result is positive, it means that the patient is infected with New Coronavirus. If the patient is infected with New Coronavirus again after recovery, it is recommended to go to the local hospital in time for isolation treatment and avoid contact with other people in order to prevent cross-infection. Tip: “New coronavirus pneumonia” and “new coronavirus pneumonia” mentioned in this article have been renamed to “new coronavirus infection” on December 26, 2022, as announced by the National Health Commission.