The news was not all bad: a different class of antiretroiral drugs, protease inhibitors (PIs), was effectie in controlling HI iral load and NNRTI-resistant irus strains for all infants studied.

• 这并不是彻底的坏消息，另一种抗逆转录病毒药物，蛋白酶抑制剂能够有效控制研究中所有的婴儿的病毒载量和非核苷类逆转录酶抑制剂耐药病毒株。