The child is 6 and a half years old, with a low fever of 37.4 degrees and a severe cough.

From the description, it may be caused by a cold. If the cough is severe, you can give the child some cough medicine to relieve the symptoms, but also drink more water, supplement water, eat some vegetables and fruits properly, supplement vitamins, and it is also helpful for the recovery of colds. Low fever can take physical cooling measures, such as warm water wiping, or wiping with alcohol.