A vaccine is a biological preparation that provides active acquired immunity to a particular infectious disease.[1] A vaccine typically contains an agent that resembles a disease-causing microorganism and is often made from weakened or killed forms of the microbe, its toxins, or one of its surface proteins. The agent stimulates the body's immune system to recognize the agent as a threat, destroy it, and to further recognize and destroy any of the microorganisms associated with that agent that it may encounter in the future. Vaccines can be prophylactic (to prevent or ameliorate the effects of a future infection by a natural or "wild" pathogen), or therapeutic (to fight a disease that has already occurred, such as cancer).[2][3][4][5] Some vaccines offer full sterilizing immunity, in which infection is prevented completely.[6]
说到早用药，什么能比的上疫苗呢？打了疫苗，免疫系统一直严阵以待，即使疫苗针对新变异的效果降低十倍百倍，还是有很大的作用, 比目前抗病毒的各种药物更明确有效的作用。所以，打疫苗要好过不打疫苗而准备很多效果不确定的药物。这是打了疫苗防重症的道理所在。
哪些人疫苗作用不理想呢？身体免疫系统功能不好或受到抑制的人， 如癌症化疗患者，接受器官移植的病人等。他们要特别注意防护，不要接触感染源。
问题是，一旦被感染，你自己会治疗吗？或有能力自己把控病情？正像杜编说的，人家EPHD 和闲医有那辨证论治的功力和本事，你行吗？
更别告说，你免疫超常与其他人不同，有啥百毒不侵特异功能，或会算命。。云云。“自信”底气靠知识和能力，不是盲目, 情绪化和无知。
A vaccine is a biological preparation that provides active acquired immunity to a particular infectious disease.[1] A vaccine typically contains an agent that resembles a disease-causing microorganism and is often made from weakened or killed forms of the microbe, its toxins, or one of its surface proteins. The agent stimulates the body's immune system to recognize the agent as a threat, destroy it, and to further recognize and destroy any of the microorganisms associated with that agent that it may encounter in the future. Vaccines can be prophylactic (to prevent or ameliorate the effects of a future infection by a natural or "wild" pathogen), or therapeutic (to fight a disease that has already occurred, such as cancer).[2][3][4][5] Some vaccines offer full sterilizing immunity, in which infection is prevented completely.[6]
没关系，全民clinical trial，过几年就有数据了。还好有这么一伙S硬派的对照组，将来可以hold these criminals accountable!