Some of the changes will result in viruses that grow faster, a virus that kills the cells better, or a virus that has changes in the outer surface of the virus so that it is no longer recognized by the immune system.
經過突變之後，有些病毒生長速度加快、有些力量增強，更厲害的是，他們大部分面貌改變，能夠魚目混珠，讓免疫系統敵友不分。