Data from Israel showed the Pfizer vaccine was just 41% effective at preventing symptomatic disease as of July.

以色列的数据表明从7月开始，辉瑞疫苗预防有症状疾病的有效率仅为41%。

That said, vaccine makers are currently testing newer formulations of the vaccines that target Omicron specifically, and those appear to be more effective at preventing symptomatic disease.

就是说，疫苗制造商目前正在测试特别针对奥密克戎的更新的疫苗配方，而这种疫苗似乎能更有效地预防症状对应疾病。