How does the darling of 7 months always catch a cold to have a fever to cough to do

Seven months old baby always cold fever cough may be due to immune decline, bacterial infection, viral infection, mycoplasma infection and cold air stimulation factors caused by, should be admitted to hospital for blood routine and C-reactive protein test. If diagnosed as bacterial infection caused, should follow the doctor's advice to take antibiotics and cough expectorant drugs for treatment, at the same time insist on daily exercise, increase body resistance.