The presence of wet rales, which are often a symptom of lung auscultation, indicates a more serious infection in the lungs and requires a CT chest examination first to clarify the extent and degree of the infection. If the infection is serious, hospitalization must be done quickly. The type of infection needs to be found, and blood tests, C-reactive protein, and antibodies to Mycoplasma pneumoniae need to be performed. If there is a positive Mycoplasma pneumoniae antibody, this indicates a lung infection caused by Mycoplasma pneumoniae, which needs to be treated with azithromycin, or erythromycin is also possible. If there is a bacterial infection, there is often an elevation of white blood cells and antibiotic treatment is needed. If there is no allergy to cephalosporin antibiotics, ceftriaxone or cefoperazone can be used. In the case of adults, treatment with levofloxacin is also available. If a viral infection occurs, treat with ribavirin. For wet rales, the phenomenon should also be treated by nebulized inhalation with cough suppressants and phlegmolytic drugs, such as tranylcypromine hydrochloride.