[ad_1]
Dr Catherine O’Brien, WHO’s head of vaccines and immunology, identified that there are actually three reasons why an extra dose of the COVID-19 vaccine and its variants would be desired.
In the 53rd episode of “Science in Five”, presented by Vismita Gupta Smith, and broadcast by the World Health Organization on its official website and accounts on communication sites, Dr O’Brien said that the first reason is if there is a group of people who did not respond adequately to the first two doses that were given. I received them because some information from the World Health Organization indicated that it may be necessary to receive a third dose for people who are immunocompromised, as long as the two doses of the vaccine did not achieve the same results as those. seen in normal and healthy people.
She added that the second reason is that the immunity acquired by the person as a result of the vaccination begins to wane and deteriorate over time. But in fact, the evidence now shows that vaccines hold up very well in terms of protecting against serious illness, hospitalization, or even death, indicating that global health experts do not see strong evidence that leads to the need for provide a one-third dose to people who have already been vaccinated.
The third reason, Dr O’Brien said, is that the performance of vaccines is insufficient or insufficient in relation to some of the worrying variables that have emerged recently, and she added that she reiterates that the vaccines currently available are anti- variables and that the World Health Organization is very carefully monitoring the resilience of vaccines in Very good, the vaccines work against exposure to a severe case of Covid, explaining that in general, the vaccines work very well.
booster doses
By answering a question as to whether there is a scenario in which certain groups of people might need a booster dose? Dr O’Brien said that so far there is evidence that there is a small percentage of people who need the booster dose, namely people with severe immunodeficiencies who do not appear to be responding. at the first two doses in the same Those who do not have immunodeficiency, and therefore need a third dose, explaining that this depends on the extent of their initial response to both doses.
O’Brien explained that if they don’t respond adequately to the first two doses, they are vaccinated with a third dose, but apart from the protection that a booster dose offers people, there are other considerations that scientists need to know.
Safety considerations first
There is certainly not yet conclusive evidence that a booster is needed in the majority of people who have been previously vaccinated, O’Brien said. Safety considerations regarding the administration of a third dose should be further investigated to ensure the safety of booster recipients before such a recommendation can be made.
She pointed out that the current situation is that the vaccines they were vaccinated with are still in order to protect against cases of serious illness and avoid the need for hospital treatment or death, noting that this is the goal. main vaccine.
poorest countries
Dr O’Brien noted that the focus now needs to be on providing vaccines and support to poor countries to protect people who have not received a vaccine at all, especially since this will reduce the transmission of infection, reduce the possibility of the emergence of more variables, and give scientists time to see.
Source link
