The difference between new crown and common cold flu is as follows: 1. New Crown is an inflammation of the lungs caused by a novel coronavirus whose host may be bats. It is often accompanied by a dry cough, fever and malaise, runny nose, difficulty in breathing, as well as diarrhea and other unpleasant symptoms. 2. The common cold is usually caused by viral, bacterial, Mycoplasma pneumoniae and Chlamydia pneumoniae infections. It is often accompanied by nasal congestion, runny nose, fever, generalized weakness, loss of appetite and abdominal pain. 3. Influenza is usually caused by type A and type B viruses, and often occurs in late fall and early winter, mainly caused by type A viruses. It is often accompanied by fever, body aches, headache, dry cough and dry sore throat. Warm tips: If you can’t identify the cause, you must seek medical treatment in time to avoid delaying the condition and affecting the treatment.