Infants bitten by mosquitoes, red and swollen pustular sores, can be under the guidance of the doctor to apply antibacterial drugs, if necessary, incision and drainage treatment, etc.. 1. Topical medication: If the impetigo is relatively small, it can be treated with topical antiseptic and disinfectant medication, such as iodophor cleaning and disinfecting, and topical mupirocin ointment. 2. Oral antimicrobial drugs: skin impetigo is commonly infected with Staphylococcus aureus, you can take some broad-spectrum oral antimicrobial drugs, such as penicillin, cephalosporin drugs. 3. Surgical treatment: If the impetigo is relatively small, it can be picked open with a syringe needle to drain out the pus and then cleaned and sterilized. If the impetigo is relatively large, or even form abscess, need timely surgical incision and drainage. For impetigo in infants, you can go to the hospital according to the size of the lesion and let the doctor choose the appropriate treatment.