急性上呼吸道感染(acute upper respiratoryinfection)简称上感,其发病率占儿科疾病的首位,是指鼻、鼻窦、咽、喉部的感染。上呼吸道感染的病原体90%以上为病毒。常见的有呼吸道合胞病毒(RSV),腺病毒,某些肠道病毒(柯萨奇病毒、埃可病毒),鼻病毒亦可引起上呼吸道感染,少数可由细菌引起。临床表现全身症状,大多有发热,体温可达39～40℃,持续1～2日或数日,部分婴儿起病时由于突发高热而引起 Acute upper respiratory infection (acute upper respiratoryinfection) referred to as flu, the incidence of pediatric diseases accounted for the first place, refers to the nose, sinus, pharynx, throat infection. More than 90% of upper respiratory tract pathogens are viruses. Common respiratory syncytial virus (RSV), adenovirus, some enterovirus (Coxsackie virus, echovirus), rhinovirus can also cause upper respiratory tract infection, a small number can be caused by bacteria. Clinical manifestations of systemic symptoms, most have fever, body temperature up to 39 ~ 40 ℃ for 1 to 2 days or days, some infants due to the sudden onset of high fever caused