[News] How Pfizer's COVID-19 Vaccines Work

[#Steeven.™]

This January 20, the 8,000 doses of vaccines against COVID-19 arrived in Ecuador; made by the pharmaceutical company Pfizer and BioNtech arrived at the Mariscal Sucre airport. Since this Thursday, the vaccination of first-line doctors began in three cities of Ecuador.

Pfizer's vaccine, whose official name is BNT162, uses genetic engineering to generate an immune response in the body by introducing into the body the information necessary to make the virus protein that causes human cells to become infected and an immune response is generated in his against

With the vaccine, strands of genetic instructions named messenger RNA, that is, the molecule that tells our cells what to do, are injected into the body. The RNA of these peak proteins are those used by antibodies to recognize the virus, therefore, this molecule, protected by a layer of lipids, is an essential part of the vaccine.

Genetic information orchestrates the production of spike proteins, thereby generating immunity against COVID-19. These proteins are harmless in themselves and are released by cells after receiving the vaccine instructions. The immune system, in response, will produce antibodies.

"The vaccine does not contain any live virus, nor does it contain the parts of the virus that can make a person sick," Pfizer experts explain.

The downside is that this vaccine, wrapped in a protective lipid capsule, must be stored at a minimum temperature of minus 75 degrees Celsius. To meet this requirement, freezers are needed because RNA is fragile.

His arrival in the country has the support of the same pharmacist and comes in refrigerated planes for his ideal transfer. Ecuador announced that it will vaccinate some 9 million citizens. In the preliminary phase that began this Thursday, doctors who have been part of the front line for almost a year since the pandemic began are vaccinated.

Subsequently, health authorities expect to have a total of 18 million vaccines, due to the double dose required by the Pfizer vaccine. There are at least five groups who cannot get the SARS-cov-2 vaccine: those under 16 years of age, pregnant women, people with catastrophic (immunosuppressed) illnesses, people with bleeding problems, and people with severe allergies.