Weakness may be a symptom of the novel coronavirus infection, but it is not a diagnosis because it can also be caused by other reasons, such as overwork or anemia. In the case of novel coronavirus infection, symptoms such as fatigue, fever, cough and phlegm, chest tightness, breathlessness and loss of appetite may occur. However, fatigue can also be caused by a lack of nutrients in the body, overexertion, lack of sleep, stress, anemia, upper respiratory tract infections, and other illnesses. If you want to determine whether you are infected with the new coronavirus, it is recommended that you go to the hospital for a nucleic acid test. If the result of the nucleic acid test is positive, it means that you have been infected with the new coronavirus, and you need to go to the hospital for quarantine treatment in order to prevent cross-infection. There are many causes of fatigue, and it is recommended that patients go to the hospital in time to determine the cause of the disease so as to avoid delays in their condition.