23、流行性腮腺炎有那些表现?如何预防?流行性腮腺炎也叫痄腮,是腮腺炎病毒引起的急性呼吸道传染病,以腮腺肿胀、疼痛、伴有发热和全身不适为特征,大多数发生在学龄与学前儿童,冬春季发病较多。病后可终生免疫。它的主要表现是,在腮腺肿胀的前1～2天内常有发烧、头痛、食欲减退、恶心呕吐、全身不适等症状,以后出现腮腺肿胀,先发生在一侧,或两侧同时肿大,2～3天内到达高峰。腮腺肿大以耳垂为中心,向前、后、 23, what are the performance of mumps? How to prevent? Mumps, also known as mumps, is an acute respiratory infection caused by mumps virus, characterized by swelling of the parotid gland, pain, fever and general malaise, the majority Occurred in school age and pre-school children, more incidence in winter and spring. Disease can be lifelong immunization. Its main manifestation is the parotid swelling in the first 1 to 2 days often have fever, headache, loss of appetite, nausea and vomiting, general malaise and other symptoms later parotid swelling occurs first in one side or both sides at the same time swollen, 2 to 3 days to reach the peak. Parotid swelling to the earlobe as the center, forward, after,