什么是群体免疫

supershit

上帝制造了病毒,也制造了免疫力,世界上除了你自己没有什么能杀死病毒.如何产生免疫力,一是疫苗,没有则只能靠群体免疫.除非你能永远不和人接触.疫苗的原理来自群体免疫,疫苗本身是病毒被弱化的复制品,经过大量临床试验,让你产生免疫力又尽量不危及你的生命.所以疫苗是可控制的群体免疫;群体免疫是不可控的,几百上千年前是完全的优胜劣汰.现在则不是, 专业人事会告诉你病毒的传播途径,告诉你如何防护,遵守的人会大大降低被感染的概率,  短时间接触少量的病毒和注射疫苗类似.被感染也能得到救治.封城可以一个月二个月三个月,一年二年可能么,一些病毒并没有疫苗,但我们的身体里已经有了他的免疫力,靠的正是群体免疫.

From the moment the invaders arrived, breathed our air, ate and drank, they were doomed. They were undone, destroyed, after all of man's weapons and devices had failed, by the tiniest creatures that God in his wisdom put upon this earth. By the toll of a billion deaths, man had earned his immunity, his right to survive among this planet's infinite organisms. And that right is ours against all challenges. For neither do men live nor die in vain.