Though the first case of transmission through drug use was reported as early as in 1988, the proportion of total cases accounted for by this source stayed at less than 2 % for several years running.
至於毒癮愛滋，台灣自 1988 年通報第一個個案以來，毒癮愛滋感染者比率一直控制在 2 % 以下。