An acute, inflammatory, contagious disease caused by a paramyxovirus and characterized by swelling of the salivary gland流行性腮腺炎是由腮腺炎病毒引起的腮腺非化脓性肿胀，伴有疼痛。
However, they said there studies had indicated that it might combine with a virus from the paramyxovirus family -- which但是他们又说,研究还表明这种病毒可以和副粘病毒家族(通常导致麻疹,腮腺炎和狂犬病)的另外一种病毒组合而造成更可怕的后果.