AstraZeneca CEO Pascal Soriot suggested that a vaccine for coronavirus might have to be administered every year, reported CNBC.
"Most companies are targeting two injections for the initial vaccination and then our own assumption based on what we know from the technology we use with SARS 1 is that the immunity could last 12 months maybe 18 months," Soriot said.
However, he admitted "the truth is that we don't know, this virus is very unpredictable."
Meanwhile, AstraZeneca has reached deals to distribute its potential COVID-19 vaccine in different parts of the world.
"We have set up supply chains independently from each other," Soriot said, reaffirming a commitment to provide their vaccine all over the world.
"If it does work, we will be able to start supplying the vaccine in October, November and our goal is to supply everyone around the world at the same time," he added.
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