Novel coronavirus pneumonia itself is a disease caused by a novel coronavirus infection, and in general, antibiotics for novel coronavirus pneumonia are used very cautiously. In addition to screening for the pathogens of novel coronavirus pneumonia, blood tests, C-reactive protein, calcitoninogen and other indices are also performed during the treatment of patients, and these indices, combined with chest imaging, can help determine whether the patient has a bacterial infection in addition to novel coronavirus infection. These indicators, along with chest imaging, can help determine whether a patient has a bacterial co-infection in addition to the novel coronavirus infection. In general, antibiotic therapy is given only when there is clear or more evidence to support bacterial infection. The use of antibiotics during clinical treatment will be very standardized and rigorous, and it is not necessary to use antibiotics if there is fever or pneumonia. Content source: Dr. You Lai