“高度有效”
用英语怎么说？

Despite the government's failed response, American science achieved a historic breakthrough. Researchers like Barney Graham and Jason McLellan spent years studying how viruses invade human cells. They focused on stabilizing the "Spike" protein of coronaviruses to train the human immune system to fight the pathogen. When the Chinese online database posted the virus's genetic sequence in January, Graham and his team designed the modified proteins in just a few days. They turned over their blueprint to Moderna, a biotech company that used a novel messenger-RNA platform. This process allowed them to skip years of traditional trials and produce a vaccine in record time. The first human trial began in March, and the vaccine proved highly effective in preventing severe illness. This extraordinary scientific effort provided a glimmer of hope. However, deep political divisiveness and public distrust in science continue to slow down the ultimate goal of reaching herd immunity.

尽管政府的应对失败了，但美国科学界取得了历史性的突破。巴尼·格雷厄姆和杰森·麦克莱伦等研究人员花了几年的时间研究病毒如何入侵人体细胞。他们专注于稳定冠状病毒的“刺突”蛋白，以训练人体免疫系统对抗这种病原体。当1月份中国在线数据库公布该病毒的基因序列时，格雷厄姆和他的团队在几天内就设计出了修改后的蛋白质。他们把蓝图移交给了莫德纳（Moderna），这是一家使用新型信使核糖核酸（mRNA）平台的生物技术公司。这一过程使他们能够跳过数年传统的临床试验，并在创纪录的时间内生产出疫苗。第一项人体试验于3月开始，疫苗被证明在预防重症方面高度有效。这项非凡的科学努力带来了一线希望。然而，深刻的政治分歧和公众对科学的不信任继续延缓实现群体免疫的终极目标。