Thanks for following up, your daughter is small and her immunity is decrease, children till 5 years have less antibodies in blood then adult,thats why they catch infection easier. Every throat infection and rhinitis will accompany with cough, because mucus goes inside pharynx.In this case its OK, you do not worry because cough is protective reaction. From other side , if child suffer bronchitis 4 times in year, then mother should visit allergist. But you didn t tell me what diseases she had.It was bronhitis or usual pharingitis and traheitis. One more i advice you please show your child to ENT doctor, because she can have adenoids and can cough, because there are locus of infection. For decreasing morbidity i recommend to your daughter courses of vitamins: 1.To begin with multivitamins-zincovit 5ml (1 teaspoon)-1month 2.Then after zincovit-osteocalcium 5 ml 1 time-1 month 3.Then B complex syrup 5 ml 1time 1 month If you see that she starts to sneezing give to her antihistamine and nasal drops and wash her nose with saline water then mucus from nose will not go to pharynx and trahea and she will not cough All the best Grow quicklier Dr.Svetlana