兄弟にほぼ同一時期に発生したVirus性疾患によると思われる難聴の2家族症例

FAMILIAL LOSS OF HEARING DUE TO VIRUS INFECTION

　Ⅰ．緒言

　私共の「幼児言語聴力相談室」を訪れる患児の中には，難聴の病因，その発生時期，発現様式，家族性などの面で興味ある症例が少なくないが，今回は家族歴に異常を有しない兄弟にvirus疾患罹患後ほぼ同一時期に発生したと思われる感音系難聴の2家族症例を報告して，諸賢の御批判を仰ぎたい。

　Two siblings whose ages were 6 years 7 months and 2 years 1 month respectively were found to be affected simultaneously with nerve deafness after having been affected. with an attack of rubeola in one and varicella in the other.

　In another case three siblings ages 10 years 6 months, 6 years 6 months and 2 years 5 months respectively were found to be affected simultaneously with nerve deafness following an attack of influenza in all three of them.