Oseltamivir phosphate granules should not be taken by infants. It is indicated for children over one year old. If your baby has symptoms such as runny nose, sneezing, cough and fever, consider infection of the respiratory tract. Go to the hospital to improve the routine blood test. If it is a bacterial infection, you need to take oral cephalosporin or penicillin antibiotics, and if it is a viral infection, you need to take oral antiviral combination. During the period of flu medication, if breastfeeding, the mother needs to abstain from spicy and stimulating foods and drink more water. It is also important to open the windows in the room for ventilation.