鼠疫、霍乱、脊髓灰质炎等曾经令人闻风丧胆的疾病一个个倒在人类的脚下,但是流感仍然挥舞着利刃,奋战在战场之上。全世界每年都有成千上万的人深受流感侵扰,制药公司每年都要花巨资开发新的疫苗。流感为什么如此让人恐惧?人们在对付流感的战争中为什么鲜有胜算?本文将为你解答这些问题。 Plague, cholera, polio and other once-frightening diseases fell to the ground one by one, but the flu was still waving sharply and fighting on the battlefield. Every year thousands of people in the world are hit by the flu every year, and pharmaceutical companies spend huge amounts of money every year on new vaccines. Why is the flu so daunting? Why do people have little chance of winning a war against flu? This article will answer these questions for you.