Dog shoveling officials should know that dogs need regular vaccination, but do not know why to do so, then let Dr. E give you a popular science ~
What is the vaccine?
1 Inactivated vaccine
Commonly known as "dead seedlings". Viruses or bacteria are artificially killed, but they retain immunogenicity. Their characteristics can be distinguished by the immune system, but they will not reproduce in the body, so there is no risk of disease.
Attenuated live vaccine
Commonly known as "live seedlings". Contrary to "dead seedlings", they do not kill these sick guys, but use some methods to keep them in a half-dead state. They are all alive, which preserves their reproductive capacity, but does not cause disease. After entering the body, it will reproduce naturally, which can stimulate the body's lasting immunity to pathogens.
Why can vaccines only be stored at low temperature?
Vaccines are essentially microorganisms or proteins, which are very strict with the environment, especially sensitive to temperature. Microorganisms will die because of temperature changes, protein will be denatured with temperature changes, just like eggs are liquid when they are raw, and become solid when they are cooked, denatured protein is definitely not what we need.
What will happen if the temperature of the vaccine rises?
"Live seedlings" will reproduce desperately at the right temperature, and can reproduce several generations in a short time. Anyone who has studied biology knows that according to the theory of genetic variation, so many generations of "live seedlings" may "revive" to restore fatal toxicity, or make the immune components of dogs disappear in multiple generations of inheritance.
So it doesn't matter if the seedlings
die? Wrong! Inanimate bacteria or viruses are corpses, whose proteins will degrade and melt at high temperatures, and naturally have no immune activity.
In a word, when the temperature changes, the vaccine is not a vaccine and can not be injected.
Why do vaccines need to be injected at fixed intervals?
After the dog is vaccinated, the body needs to produce antibodies. Antibodies are the small guards that the body produces to resist the virus. They remember the appearance of the virus injected into the body. If they encounter these viruses again, they can quickly identify and catch the virus, so as to achieve the effect of resisting infectious diseases.
If antibodies are produced after the first vaccination, but the second vaccination is given in a short period of time, the antibody level in the dog's body is higher at this time, and the vaccine injected later will be neutralized by the antibodies that have been produced, which will not achieve the effect of secondary stimulation; and if the interval is too long, the memory of the immune system will fade and the effect of secondary stimulation will not be achieved. So the interval between vaccinations is fixed.
