active immunity

简明释义

自动免疫

英英释义

例句

1.The flu vaccine is designed to stimulate active immunity 主动免疫 against the influenza virus.

流感疫苗旨在刺激针对流感病毒的主动免疫。

2.Children often receive multiple vaccines to develop active immunity 主动免疫 early in life.

儿童通常会接种多种疫苗，以便在生命早期发展主动免疫。

3.Some people may experience mild symptoms as their body builds active immunity 主动免疫 after vaccination.

一些人在接种疫苗后可能会经历轻微症状，因为他们的身体在建立主动免疫。

4.After recovering from an infection, the body develops active immunity 主动免疫 to prevent future infections.

从感染中恢复后，身体会发展出主动免疫以防止未来的感染。

5.Vaccination provides active immunity 主动免疫 against various diseases.

接种疫苗提供了对各种疾病的主动免疫。

作文

Active immunity is a crucial concept in the field of immunology, representing the body’s ability to produce its own antibodies in response to an infection or vaccination. This type of immunity is essential for long-term protection against diseases. When a pathogen, such as a virus or bacteria, enters the body, the immune system recognizes it as a foreign invader. In response, it activates specific cells that are responsible for generating antibodies. These antibodies are proteins that can bind to the pathogen, neutralizing it and marking it for destruction by other immune cells. One of the most significant aspects of active immunity (主动免疫) is that it can be acquired naturally or artificially. Natural active immunity occurs when a person is exposed to a pathogen through infection. For instance, when someone contracts chickenpox, their immune system responds by producing antibodies against the varicella-zoster virus. As a result, the individual gains immunity to future infections of chickenpox. This natural process not only protects the individual but also contributes to herd immunity, which helps protect those who cannot be vaccinated due to medical reasons.On the other hand, artificial active immunity is achieved through vaccinations. Vaccines contain weakened or inactive parts of a particular organism, or sometimes just a piece of it, such as a protein. When administered, these components stimulate the immune system to produce an immune response without causing the disease itself. For example, the measles, mumps, and rubella (MMR) vaccine introduces harmless antigens into the body, prompting the immune system to create specific antibodies. This method of inducing active immunity (主动免疫) is vital in controlling and eradicating infectious diseases.The duration of active immunity (主动免疫) can vary. In some cases, immunity lasts a lifetime, as seen with diseases like measles. In other instances, the immunity may wane over time, necessitating booster shots to maintain adequate levels of protection. Understanding the longevity of active immunity (主动免疫) is essential for public health strategies, especially when planning vaccination schedules.In addition to its protective role, active immunity (主动免疫) plays a significant part in the development of new therapies and vaccines. Researchers are continuously exploring ways to enhance the body’s immune response to better combat diseases. For example, advancements in mRNA technology have led to the rapid development of COVID-19 vaccines, which utilize the principles of active immunity (主动免疫) to train the immune system to recognize and fight the virus effectively.In conclusion, active immunity (主动免疫) is a vital component of our immune defense system, providing long-lasting protection against various pathogens. Whether acquired naturally through infections or artificially through vaccinations, this type of immunity is fundamental in safeguarding individual health and promoting public health. As we continue to face emerging infectious diseases, understanding and harnessing the power of active immunity (主动免疫) will be crucial in our ongoing efforts to improve health outcomes globally.

主动免疫是免疫学领域中的一个关键概念，代表着身体在感染或接种疫苗后产生自身抗体的能力。这种免疫类型对于长期保护免受疾病侵害至关重要。当病原体（如病毒或细菌）进入体内时，免疫系统会将其识别为外来入侵者。作为回应，它会激活特定细胞，这些细胞负责生成抗体。这些抗体是可以与病原体结合的蛋白质，从而中和病原体并标记其供其他免疫细胞消灭。主动免疫（主动免疫）的一个重要方面是它可以自然获得或人工获得。自然主动免疫发生在一个人通过感染暴露于病原体时。例如，当某人感染水痘时，他们的免疫系统会通过产生针对水痘带状疱疹病毒的抗体来作出反应。因此，个人获得了对未来水痘感染的免疫。这一自然过程不仅保护了个体，还促进了群体免疫，有助于保护那些由于医疗原因无法接种疫苗的人。另一方面，人工主动免疫是通过疫苗接种实现的。疫苗包含特定生物体的减毒或灭活部分，有时仅仅是其中的一小部分，例如一种蛋白质。当施用时，这些成分刺激免疫系统产生免疫反应，而不会导致疾病本身。例如，麻疹、腮腺炎和风疹（MMR）疫苗将无害抗原引入体内，促使免疫系统创建特定抗体。这种诱导主动免疫（主动免疫）的方法在控制和消灭传染病方面至关重要。主动免疫（主动免疫）的持续时间可能有所不同。在某些情况下，免疫力可以持续终生，例如麻疹。在其他情况下，免疫力可能会随着时间的推移而减弱，因此需要加强注射以维持足够的保护水平。了解主动免疫（主动免疫）的持久性对于公共卫生战略至关重要，特别是在规划疫苗接种时间表时。除了保护作用外，主动免疫（主动免疫）在新疗法和疫苗的开发中也发挥着重要作用。研究人员不断探索增强身体免疫反应的方法，以更好地对抗疾病。例如，mRNA技术的进步使COVID-19疫苗的快速开发成为可能，这些疫苗利用主动免疫（主动免疫）的原理来训练免疫系统有效识别和对抗病毒。总之，主动免疫（主动免疫）是我们免疫防御系统的一个重要组成部分，为各种病原体提供持久的保护。无论是通过感染自然获得还是通过疫苗人工获得，这种免疫类型在保护个人健康和促进公共健康方面都是基础。随着我们继续面临新兴传染病，理解和利用主动免疫（主动免疫）的力量对于我们改善全球健康结果的持续努力至关重要。