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“I do not think that the time of vector vaccines has passed, they are created by established technology.” This was said in an interview with BNR by Prof. Dr. Mariana Murdzheva, clinical immunologist and rector of the Medical University in Plovdiv.
According to her, the benefits of these vaccines cannot be ruled out lightly. According to her, the rare cases of thrombosis cannot be a reason to stop the administration of vector vaccines.
“It is not possible to say whether the Johnson & Johnson vaccine can cause much more serious or dramatic effects in the direction of thrombosis or thrombocytopenia. Clinical trials do not provide such data, explained Prof. Murdzheva in the program “Before All”.
She added that isolated cases of thrombosis have also been reported with RNA vaccines.
Those who receive the first dose of AstraZeneca vaccine can continue with the second, unless they have the preconditions for thrombosis, the immunologist said.
There are currently many conflicting opinions about mixing vaccines and administering doses of different vaccines, said Mariana Murdzheva. “There is no scientific evidence of what happens when two different vaccines are mixed.”
The currently developed vaccines against Covid-19 are not sterilizing, they do not destroy the virus and do not prevent it from entering the nasopharynx, the specialist stressed.
“In other words, the virus can infect even those who have been vaccinated.”
Vaccinated people with a low immune response can transmit the virus through sneezing, coughing, splashes when speaking – so it can get to other people, said Prof. Murdzheva.
No one can yet say how long the immune response will last after vaccination with the second dose, she explained.
“It is expected that vaccines may create immunity for a year. We may need to be vaccinated every year, as is the case with the flu virus.”
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