How does baby virus infection cough do

Baby should be symptoms of upper respiratory tract infection, cough caused by virus infection generally lasts for about a week, cough is caused by pathogen itself to respiratory tract stimulation, but also may be caused by nasal secretions backflow, parents can give children physiological sea salt water nasal spray, under the guidance of doctors to take cetirizine to reduce nasal discharge, try not to cough medicine before 4 years old, can give baby 2~5ml honey before bed.