weakened immune systems meaning in English

抵抗力弱
齐心行动

Aids ( acquired immunodeficiency syndrome ) is a group of illnesses which occurs as a result of a weakened immune system . what causes it ? the virus called
爱滋病(后天免疫力缺乏综合症)是由于免疫系统因受到爱滋病毒感染后而逐渐衰弱所引发出的多种疾病。
In the light of recent animal research , we have become convinced that the vaccine can boost patients ' weakening immune system and decrease the amount of virus circulating in the blood
根据最近的动物研究，我们相信这种疫苗能改善患者正在衰竭的饿免疫系统并减少在血液中循环的病毒数量。