How long it takes to get well from a respiratory infection is related to the type of respiratory tract and the severity of the condition. Mild cases usually get well in 5-7 days, while severe cases can extend to 7-10 days or even as long as a month. Respiratory tract infections are categorized into upper and lower respiratory tract infections. 1. Upper respiratory tract infection: the main pathogen is virus, a small number of bacteria, is a self-limiting disease, the condition is mild, mainly given symptomatic treatment, mostly in 5-7 days can recover. However, when accompanied by high fever or complicated by bacterial infection, such as purulent tonsillitis, the treatment needs to be given antibiotics to fight infection, such as cephalosporins, and the recovery time can be extended to 7 days. 2. Lower respiratory tract infections: mainly including bronchitis, pneumonia, bronchial dilatation, etc., common germs are bacteria, viruses, mycoplasma, etc., usually manifested as fever, coughing, and severe respiratory distress. If the condition is mild, no underlying disease, also need 7-10 days to control, but the elderly or have a history of underlying disease, the treatment time will be extended, or even a month or so to be completely well. Respiratory infections can cause infectious shock in severe cases, so if you have any discomfort, promptly go to the hospital, standardize the use of medication under the guidance of the doctor, and pay attention to physical exercise in order to strengthen their own resistance.