What is the Covid-19 vaccine? Mechanism of immunity?

2021-06-05 10:03 PM

The covid-19 vaccine is a type of vaccine against acute respiratory infections, helping to prevent Coronavirus. Mechanism of active and passive immunity of Covid-19.

What is the Covid-19 vaccine?

The covid-19 vaccine is a type of vaccine against acute respiratory infections, which helps prevent coronavirus.

Passive immunity:

Passive immunity against Covid-19 can be achieved by sera from patients who have recovered from Sars-Cov-2 virus infection, which contain large amounts of immune antibodies, from super-immune globulin – eg. such as cytomegalovirus immunoglobulin (CMVIG) collected from various donors or with monoclonal neutralizing antibodies.

Active immunity:

Different vaccines work in different ways to provide protection. But with all vaccines, the body will be supplied with "memory" T lymphocytes as well as B lymphocytes that will remember how to fight the virus in the future.

Usually, a few weeks after vaccination, the body produces T lymphocytes and B lymphocytes. Therefore, it is possible for a person to become infected with the virus that causes COVID-19 just before or after the injection. vaccine and then get sick because the vaccine hasn't had enough time to build up immunity.

Sometimes after vaccination, the process of creating immunity can cause symptoms, such as fever. These symptoms are normal and are signs that the body is building immunity.

Currently, there have been many units that have announced the successful production of a vaccine against Coronavirus with quite positive effects. At the end of February 2020, the World Health Organization (WHO) expressed concern about a vaccine against acute respiratory infections caused by the Sars-Cov-2 virus that could be successfully produced within 18 months. But just 8 months later, there were more than 320 candidates participating in the global race to research and test a Covid-19 vaccine, making Covid-19 the fastest research vaccine in history.

The search for a safe and effective vaccine against the risk of Covid-19 infection is a top concern today.