Close to the finish line .. Corona vaccines, “injection or nasal… – AlKhaleej Today

I wrote Rana Osama:The American Bloomberg agency said that the Covid 19 vaccines, which are close to the finish line, were designed in such a way that they could be injected with the arm. Researchers are continuing to try to find out if they were able to find the best vaccines against Corona virus through the nose and mouth.Most vaccines in clinical trials require two doses of them to be effective, while their developers are still not sure whether they are effective enough to prevent the transmi…

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