Drug-resistant strains 基本例句 耐药株 Traditional methods to controlling malaria have met great challenges due to emergence and rapid spread of the drug-resistant strains of the parasite and insecticide-resistant mosquito vectors. 特别是近几年来由于抗药性疟原虫虫株及抗杀虫剂蚊媒的产生及蔓延，传统防治疟疾的方法受到新的挑战，因此研制一种有效的疟疾疫苗是疟疾防治的重要替代途径。 cnki