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Future vaccines against Covid-19 bring lots of controversy

Photo: БГНЕС

We are close to the development of a vaccine against the novel coronavirus. Doubts exist as to what extent it will protect against infection, whether it will not only lead to a milder course of the disease, the director of the National Centre for Infectious and Parasitic Diseases Prof. Todor Kantardzhiev commented for the BNR. 

In the human body, two foci are formed separately - in the upper respiratory tract and in the lungs. The most virulent and deadly is the infection in the lungs, but the viruses from there are difficult to spread among other people. Viruses in the nasopharynx are contagious, but they are less virulent. 
This is the explanation for the decrease in the strength of the virus and its lethality compared to the first months, Kantardzhiev said.



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