How does the baby cough and throat have phlegm in the month of confinement

The baby in confinement has cough, sputum and whir sound, which may be caused by respiratory tract infection. You need to take the child to the hospital for blood test to check whether it is viral infection or bacterial infection. In addition, give the child oral medication, such as ambroterol oral solution. Aerosol inhalation treatment can also be carried out.