Immunology

Live and inactivated vaccines: what is the difference, which is better?

Vaccination is an important preventive measure of many serious diseases, it plays a key role in maintaining the health of the nation. Therefore, you should understand what drugs she carried. Depending on the kind introduced vaccines can be generated, but it is a normal body reaction to it. Never fear, it is important to know more useful information about vaccinations, and then the fear gone, and in its place comes awareness and understanding.

Main types of modern vaccines

The vaccine is called a drug used for the formation of immunity to the microorganism which is the causative agent of a specific disease. Immunization or vaccination is the process by which the immune response is formed, thanks to the introduction of the vaccine.

Types of vaccines there are many, they are classified according to different criteria. But the main classification, they are alive and inactivated.

Live or attenuated vaccines are made from weakened pathogens that modifierade by artificial means. In fact, the man injected the viruses or bacteria that are pathogens of a particular disease, but they are so weakened that they can not cause disease. They multiply in the body, stimulating, thus, the production of immunity to itself. Components attenuating vaccine get in the way of their cultivation in cell cultures or chicken embryos, so in some people these drugs can cause allergies. For example, to be vaccinated with live vaccines is not people who are allergic to eggs.

Living vaccines have both advantages and disadvantages. Their main advantage – they form strong immunity for a long period of time. However, there are risks – strain vaccine can cause real disease, although it happens very rarely. Local reactions to these vaccines are more explicitly: can hurt and swelling of the injection site, rise body temperature etc it is considered normal. Also has caveats: it is impossible to introduce real drugs to people with HIV, leukemia and other diseases related to the human immune system.

Inactivated or killed vaccines are preparations containing living microorganisms. To the immune reaction of the body was expressed in these vaccines are almost always added adsorbents are special substances that stimulate the body’s response to the pathogen. Most common adsorbents are aluminum salts (aluminum phosphate or hydroxide).

Because inactivated vaccines are no live viruses and bacteria, they never cause the disease against which instilled people. Therefore, inactivated vaccines are used to protect patients with immune deficiency, leukemia and other immune diseases. But there are drawbacks such drugs: they always need to enter several times with certain intervals (to booster), the immune system begins to form only after the second or third injection.

It is difficult to answer the question: which vaccine is better, live or inactivated? Live much better and faster form the immune system, but are less safe than inactivated, not suitable for people with certain diseases, can cause allergies. Live vaccines, often cheaper, inactivated – expensive. One thing is clear: if no specific contraindications, be vaccinated with live vaccines. You should not be afraid of vaccinations, should fear the diseases against which it is held.

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