Vaccines are an important achievement in fighting many types of diseases. But the number of people who are skeptical about the safety of the vaccine is increasing and they think the vaccine is dangerous instead of protecting our health. On the internet there are many stories about post-injection reactions that cause a number of disabilities and deaths, the truth is that vaccines also have side effects. So let's find out how the vaccine works and use analytical data to see if using or not using the vaccine is the right thing?
Principle of operation of the vaccine
Your immune system is like a complex army with billions of cells including warriors (macrophages, neutrophils), researchers (tassel cells) and heavy weapons (B cells). ). Every day, you are attacked countless times but your warriors often quietly deal with it, so you don't feel anything.
But once you have a severe infection, researchers will enter, collecting information about the attacker and activating the "weapon workshop" with the name commonly called antibodies. Antibodies like directional missiles are specially manufactured to attack invaders but unfortunately this process takes about a few days to complete. Meanwhile intruders have a lot of time to harm the body.
Your body really doesn't want to have to constantly participate in such wars because the immune system creates a great solution to get stronger and stronger over time. When we have to fight an enemy that is dangerous enough to activate "heavy weapons", the immune system automatically creates memory cells.
These memory cells "hibernate" in our bodies over the years, they do nothing but remember. When the old enemy attacked for the second time, the memory cells woke up, ordered proper antibody production and attacked immediately, ignoring the research step.
This is so fast and effective that there are diseases you will only get once and never get caught and immune to them for life. That is also the reason why children are more sick than adults because they do not have enough memory cells in their bodies. Thanks to the discovery of this wonderful natural mechanism that is the basis for our creation of the vaccine.
How does the vaccine work?
Memory cells are great, but the body produces them only when they are sick, which is often uncomfortable and sometimes dangerous. Vaccines are a way of tricking the body into producing memory cells to create immunity by injecting the pathogens that are not likely to cause harm. For example, the pathogen is dead or weak.
For this type of vaccine, our immune system handles quite easily. However, the number of memory cells produced is also limited, in many cases we need more memory cells to help the immune system stronger. Therefore, the "live vaccine" was born. An enemy that can resist is more difficult to deal with than a dead enemy but also brings more information. But what if the pathogen wins?
To prevent this from happening, we create a weak relative of this pathogen in the laboratory, just barely toxic to affect the immune system and create enough memory cells. In short, the basic principles of vaccines are to activate the body's natural response, immune to dangerous diseases. However, there are still some germs such as flu viruses, mutations that are so fast that every year we need a new vaccine, but most vaccines can protect us for years, even Lice for life.
Risks of Vaccines
Like everything else, the vaccine has the left side which is a side effect. So what side effects can there be and what will happen if your child has side effects from the vaccine? It is difficult to directly compare the side effects of vaccines with the effects of the disease. For example, there are hundreds of millions of people in the West who are vaccinated against measles while only 83,000 cases of measles in Europe in 2018. Because the difference is so large, even very minor side effects seem scary. when the disease has almost disappeared.
Before the measles vaccine in 1963, almost every child on earth had ever been infected with measles. There are about 135 million cases of measles every year in the years 1950-1960. If not using the vaccine but getting health care with advanced technology in 2019, is measles still scary? Try calculating based on real numbers. Imagine that in a parallel universe, there is a developed country, where the health care system is very good but people do not vaccinate. Suppose that 10 million children get measles. What will happen?
9 million 800 thousand children (98%) will have high fever and rash. Approximately 800 thousand children (8%) will suffer from acute diarrhea. About 700 thousand (7%) of children will have ear infections, which can lead to complications resulting in permanent deafness. About 600 thousand children (6%) will develop pneumonia – the most dangerous symptom of measles. That alone was enough to kill 12,000 children. Nearly 10,000 children (0.1%) will develop encephalitis. 2500 children (0.025%) will suffer from SSPE: a measles virus-borne disease that stays in the brain and kills children after a few years. In addition, about 2.5 million children will suffer severe symptoms of measles and about 20,000 will die from measles. Everything hasn't stopped here. The immune system of sick children will be severely devastated and takes a lot of time to recover. This is the perfect time for other pathogens to attack the body.
So what if using vaccines? It will be more fair if we look at its side effects. Now repeat the experiment, but with 10 million children vaccinated, what will happen? After vaccination, about 1 million children (10%) will have a fever. 500,000 children (5%) will have a mild rash. Nearly 100 children (0.001%) will have a severe allergic reaction and need to be treated. Nearly 10 boys (0.0001%) may have genital infections. Nearly 10 children (0.0001%) may develop encephalitis – the most severe side effect possible when vaccinated. So if we vaccinate 10 million children, a total of about 120 children will show serious side effects. But thanks to good medical treatments in developed countries, almost all will be fine.
Measles is dangerous for your child more than a thousand times the worst side effect of the vaccine. To find deaths due to the side effects of the vaccine, you must use an extremely large magnifying glass to illuminate the middle of the sea because it has extremely low polarity ratio. Meanwhile, the number of measles deaths is very easy to find, only in 2017, 110 thousand people died of measles in the world. You can compare vaccines with seat belts. Has there ever been fatal accidents due to wearing a seatbelt? The answer is yes. But do you think it's not safe to wear a seatbelt?
And yet, what if your child is allergic to the composition of the vaccine and can't use it at all? If so, you need to be an active person to mobilize people to get the most vaccine. Because if you can't get vaccinated, only the community can protect your child and this is called "community immunity". "Community immunity" means that in the community there are enough people to be immune enough that the pathogen cannot spread and will die before spreading to someone. But to achieve this, for measles alone, 95% of people around you must be vaccinated.