Small pox to Covid 19 full history

 It was 1796 when a British doctor, Edward Jenner, observed that smallpox epidemics were less common in farmers with Cowpox, a disease transmitted from buffaloes to humans. He concluded from this observation that if a person is already aware of the germs of a disease similar to a disease, then perhaps the human body develops the ability to resist the actual disease.

Small pox to Covid 19 full history

To prove this, Jenner injected CowPox wound material into the body of an eight-year-old boy. As a result, the child survived the human smallpox epidemic. This experiment was the first to be vaccinated. And on that basis, Edward Jenner is called the pioneer of immunology, and the material used in that experiment, or the one that came out of Cow's wound, was actually the world's first vaccine.

Scientific research is a continuous process, which changes over time. Every scientist wants his research experiments to be more stable and weighty than the previous ones, and at the same time to be more rigorous. Vaccine research has also gone through this process and eventually a variety of vaccines have been developed against many infectious diseases that have led to the extinction of many diseases such as polio and smallpox.

Code 19 is also a global epidemic. Therefore, the only permanent solution lies in the vaccine against the virus Sars Cov 2. It usually takes at least three to four years for a vaccine to be developed and fully tested, but given the deteriorating condition of COD-19, many universities, scientific research institutes and pharmaceuticals are involved in the development of the vaccine. Industries began research and development of about 90 vaccines.

About ten of these vaccines are being tested on humans and some have been successfully tested and the relevant agencies have approved the use of these vaccines in the general population. Due to their basic and synthetic nature. There are basically four types of vaccines.

Inactivated viral vaccines

These vaccines are made from the complete inactivation of the SARS-2 virus. Basically, in the preparation of these vaccines, the SARS-2 virus is transplanted into human cells in a laboratory and then the ability to reproduce the virus is obtained. It has been eliminated by certain chemicals, but these chemicals have no effect on the structure of the virus, so when the virus is used as a vaccine, the human body treats it as a living virus to boost its immune system. Prepares against As a result of this precaution, even if SARS Covid 2, which accidentally causes disease from the environment, enters the human body, the immune system does not give it a chance to cause disease.

Examples of these vaccines include Sino.Vac, made in China. These vaccines can usually be stored in a regular refrigerator and currently cost a dose of ten to sixty US dollars in different countries. A research paper on the usefulness of Sino Vac has been published, according to which the prevalence of cod-19 prevention in different countries is 50 to 92%.

m RNA based vaccine

The vaccine is made using the genetic material (Rna) of the SARS code virus that makes up its spike protein. It is noteworthy that the virus attaches to human cells through the same spike protein. The vaccine is made by laying various chemicals around the genetic material that makes it.

When the vaccine enters the human body, human cells begin to make the spike protein components of the virus against which the human immune system works. Therefore, when the recipient of this vaccine enters the disease-causing SARS covid 2 virus So the immune system is already vigilant against its spike protein, which prevents the virus from invading the human body.

Vaccines developed against Pfizer / Biontech code-19 are based on the same principle. These vaccines are stored in extremely cold environments at 20 to 70 degrees. Research papers on the effectiveness of these vaccines have been published, according to which they can provide up to 95% protection against Code-19.

Adenovirus based vaccines

In the development of this vaccine, some important parts of the genetic material of the SARSVID 2 virus are inserted into another virus, the endenovirus. The endenoviruses in which these parts are inserted are already genetically modified so that Do not cause any kind of disease or any other complication.

So when these endenovirus vaccines are injected into the human body, our immune system tests them.

These vaccines can be stored in public refrigerators. A research paper on the effectiveness of a vaccine developed at Oxford University has been published, according to which it can protect humans from 62% to 90% of code-19.

viral component based vaccines

In the preparation of these vaccines, certain parts of the genetic material of the virus, for example, the gene that makes the spike protein, are inserted into the bacteria, causing the bacteria to start making these proteins of Cervix 2. Then input Genes are extracted from bacteria and covered with layers of various chemicals. When such a vaccine is injected into the human body, our immune system perceives it as an attack of the SARS covid virus and begins to make its own cells.

When the recipient of these vaccines enters the disease-causing SARS code 2, this precaution protects the person from code 19. Such vaccines are undergoing experimental and testing in different countries, after which their effectiveness will be assessed.

All of these vaccines have been developed after very strong experiments and rigorous scientific testing, and the conspiracy theories against them have been based on total ignorance or lack of understanding.