[ad_1]
“The main thing that protects against coronavirus is cell-mediated immunity. Antibodies are also important as an indicator of a recent illness, but disappear in 6-7 months in most people. Cellular immunity remains, but not for now. we can say longer term of the existence of the virus “, said in the air of” Hello, Bulgaria “pulmonologist Dr. Alexander Simidchiev.
What is cell-mediated immunity?
In order for our body to acquire protection against a certain disease, immunity, there are three main types of immune cells: B lymphocytes, T lymphocytes and antigen presenting cells. Acquired immunity is of two types, humoral and cell-mediated. We acquire humoral immunity thanks to serum proteins (antibodies), and T lymphocytes, which belong to white blood cells, are responsible for cell-mediated immunity. The term cell-mediated immunity (CMI) refers to defense mechanisms that are not characterized by the formation of antibodies. The humoral response protects primarily against extracellular pathogens and toxins, and cellular immunity is responsible for detecting and destroying intracellular pathogens (eg, cells infected with viruses or bacteria), as well as rejecting and destroying tumor cells.
Regarding mortality from COVID-19 in our country:
“In any case, we will reach heights that are above the current one, since mortality shifts over time, in relation to the number of infected and the number of hospitalized. So, in any case, we will have growth, but I it is difficult to predict how far it will go. ”
Antigenic tests to replace PCR tests
“The degree of agreement of results between PCR tests and antigen tests is greater than 98 percent. This means that antigen tests can be used as a good substitute for PCR tests. They are a little less sensitive , that is, there are people who are negative for antigen tests, but not in PCR, but they are too small a percentage.
These tests can be used to generate data to better manage the pandemic. Currently, in my personal opinion, the number of officially registered people tested for PCR is much lower than that of actually tested people. “People do more antigen tests because they are cheaper and more affordable, but they are not included in the official statistics,” said the expert.
“PCR tests are the gold standard, but we have a fast, accessible and accurate test that can allow us to generate other data. Antigen tests can also be used outside the lab, if points are set, they can be outside the lab and very quickly to control the process, “added Simidchiev.
Regarding reinfection:
“It is highly unlikely that the sick will get sick again. The numbers exceed 50 million who are sick and only about 29 people who have been proven to be repeat offenders. But it is even better for me to have uniform standards for everyone, if everyone wears masks: everyone even the sick must wear masks, “added the pulmonologist.
See more on the subject in the video.
COVID-19: 152 new victims, 44% tested positive
A nurse who worked in the COVID ward was evicted from her home
Sebastian Kurz: Don’t date anyone
Prof. Vitanov: The virus’s time is running out
How Taiwan Defeated the Coronavirus
In patients with covid-19, the GP does not have the right to a home examination
