The fourth dose of the coronavirus vaccine is necessary for most people, as the protection of the formulation does not last long, Pfizer CEO Albert Burla estimated, speaking to CBS on Sunday.
"Right now, the protection we have from the third dose is pretty good. In fact, it's pretty good against hospitalization and death, not so good against infection, but it doesn't last very long," Burla said.
Pfizer and other pharmaceuticals are working on vaccines that will protect against future mutations of the virus, he added.
"Omicron was the first to be able to bypass the immune protection that we have given, but also the duration of protection is not very long," he said.
"What we are trying to do and working very carefully right now is to make a vaccine that not only protects against all mutations, including Omicron, but can also protect for at least a year," he concluded.
Source: in.gr
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